Hope you guys enjoyed! Check out our new merch here: www.bunkerbranding.com/pages/ballistic-high-speed What else would you like to see fired underwater?
It's crazy how high quality your content is. I remember watching the mythbusters episode on this years back and though their test was super interesting the quality of your content blows it out of the water
So amazing. I’m so grateful for Mythbusters because it paved the way for stuff like this. Knowing these guys grew up on it, now they’re taking it to the next level. I love it.
A few years ago Mythbusters fired a number of rifle cartridges into a swimming pool. All of the high velocity rifle bullets broke apart, even steel jacketed bullets, on contact with the water. Pistol bullets went the furthest in the water. It doesn’t take nearly as much water to protect you from high powered rifle bullets as it does slower moving pistol bullets.
Only thing is, this doesn't really tell the whole story. Some years ago I read through a us army (or maybe it was usmc) study on this. If memory serves it was done in the aftermath of ww2. I seem to recall that testing was on pigs and they tested various calibers. Here's the thing - It's pretty common knowledge that explosions under water are pretty dangerous. Because your meat parts are a pretty similar density to water, the shockwave gets transferred right through you until it hits something with a different enough density and then shreds that. The shockwave from bullets hitting and cutting the water around you basically do the same thing. In the testing, they found a whole lot of damage to the organs, especially the lungs, and blood vessels from pretty surprising distances. Basically, you might be submerged a couple of feet and a burst of 30 cal mg fire hits the water above you. It shreds your lungs and you drown in your own blood without even having a mark on you.
Cool video, for scientific purposes tho you guys should increase the vertical depth of the tank. Right now the water can easily be displaced which creates the cavitations. You would get very different results I think if you had a 2 foot deep tank
I was going to point that out too. The water can escape too easily, so doesn’t at all relate to ”how deep you would need to be to survive”, as all these tests is at a depth of 3-4 inches. If they had stood the box up (with 4 walls) and shot straight down, it would have yielded a completely different result.
The Mythbusters tried water vs bullets. Rifle rounds self-destruct on contact, pistols penetrate a few feet, and a shotgun flooded their shop by blowing the bottom out of a 10-foot deep tank.
While I was about to make the same comment, I remembered that was almost 20 years ago. High speed has grown exponentially. Also, the shotgun blew out the sides of the Mythbusters tank, not the bottom. The shockwave broke the “glass”, not the slug hitting the bottom.
As I recall, they determined the faster the bullet, the less water needed to stop it because hitting the water at hypersonic speeds was like hitting cement.
@@MH2ga.12 Yeah, that's where they shot the 50 cal... pretty much the same results, the deepest penetration were the slower velocity hand guns and even the 50 cal tore itself apart in the first couple of feet.
Thanks for making this, I also want to appreciate your hard work after each shot. Drying, sealing and Filling the tank again. Setting up camera etc. great content
If/When you guys build another box, don't paint the inside flat white. Go for a 20-30% off-white grey. That way, light interaction with the water will contrast with the background better! Great video, guys!!! Made my lunch break at work more enjoyable! Edit: go Gun-metal Grey!!! Yeah... that'll do...
Man 8.6 blackout would be such a cool round to check out like this high speed. Shot from Q the Fix its spinning 500k rpm. Would be sick to see what that does to a soft target.
I found your channel a short while back when you guys were at around 100k subs, and I immediately knew this channel would blow up very fast. You guys 100% deserve the millions more soon to come
14:27 if the second version of the box is V shaped, the water won't expand against parallel walls, it'll just be flung upward, causing less damage to the box.
For version 2 of your box, I'd recommend rather than bolting the plexiglass to the steel box, have it held in place by springs. That way when the lateral force comes, the springs extend, letting out some water and relieving much of the pressure before snapping back into place.
As a fellow Hoosier, I always thought the local scenery looked awfully familiar in your videos. Folding chairs + tripods are the comfiest way to shoot, can confirm
I’m curious volume comes in to play here like the ripple effect of each of those ripples have very little distance to travel so therefore the concussion is larger whereas if a bigger tank per se or a live situation like a lake or a pool that it would disperse more because of those waves through the water, have farther to travel, instead of coming back and almost creating more turbulence is is so cool to watch being able to see the amount of force that that small bullet is putting it it’s just this small amount of volume of water is amazing. Totally can appreciate all the hard work that goes into making such a video. Thanks for sharing.
You can't do anything with a bullet in water when it hits the water it's like hitting steel loseing all its energy instantly it may hurt at about a ft But that's it
I remember an SAS guy saying you can be shot underwater, with the “experts” saying the opposite. Was surprised by this result, lethal deeper than I would have thought.
Pressure only depends on depth, not volume. And as water does not compress a lot, I think depth won’t make a big difference either. But you may have a point because shock waves won’t be able to propagate in a small tank.
Pressure from depth is static pressure. A moving bullet entering water is.... well kinda nonstatic. A larger tank has larger walls. The same amount of energy over a larger area will result in less energy per area compared to a small tank. And in the end less energy per area leads to less force per area aka pressure.
@@jendriktrager4996 larger pools will surely have larger walls but surface area is proportionate to square while mass increases by cube thus pressure will definitely increase as the water body gets larger.
@@didfet5496water does not compress that's why it applies greater pressure. A bullet travelling through a water body will experience greater resistance the deeper it goes.
9:50 As someone who watch a lot of SpaceX lauched, seeing how fast this speed drop put a smile on my face. People have no idea how much is the effect of drag while slowing something down. You see a Falcon 9 light 3 engines and barely slow down from 8000km/h to 6000 while just the atmospheric drag allow bring it down to just below 500km/h when it fires its engines for the final time before touchdown. And here we're talking about air, well...that's water to you, 2600 to 0 in...30 centimeters.
.556/.223 were designed to tumble and dump all their energy within the body. That's why the military chose it in the 1960s. The 7.62x51 caused a lot of damage, but overpentrated before dumping it's energy. I was wondering if it would make it far.
556. is actually great at penetrating body armor. thats why they used it. 556 punches through what 7.62 wouldnt. small hot and fast beats slow hot and big every time regarding body armor. the 556 is accurate out over further ranges than the 7.62. less bullet weight less bullet drop over distance. civilians arent experts on anything firearms related. opinions dont make people experts.
@@nomercyinc67835.56 was adopted before body armor was even thought about being a thing. The only thing that was considered for penetration was Soviet steel helmets at 500 yards with the steel penetrator. (Which wasn't a great feat by any means at all). 5.56 was chosen because more more could be carried by the foot soldier than what could be carried with 7.62x51 and also rifles were more manageable on auto fire than what they were with 7.62x51. 5.56 is only more accurate at distance than 7.62x39, 7.62x51 more accurate than 5.56 at further ranges. 7.62x51 can reach and still be useful at much greater ranges than 5.56 is even capable of obtaining. So guess what Junior you need to read your previous comment in front of a mirror back at yourself and go back to school boy.
@@nomercyinc6783civilians aren't experts on anything firearms related? Thats an ignorant statement. I am an infantry veteran, and I can point you in the direction of a handful of civilians in my area who have likely forgotten more about firearms/firearms related things than you and I could ever learn. Nice way to show your ignorant opinion proves your point about expertise 😂
Thank you for sharing. Too many people have been watching movies and think bullets travel through water… think you have proved it doesn’t take much water to make a bullet none lethal. Shallow end of a swimming pool is enough. Not only don’t bullets travel through water well; they often skip off the surface. This is why they teach you in hunters safety if a body of water is behind your target, don’t shoot.
Supersonic rounds react badly to water... if I remember MB it skipped if you got below about 30 degrees offset. I wonder what a subsonic .223 would look like.
All of these bullets are still very lethal, the energy is being transferred into shockwaves that can travel very far and will transfer through human tissue and then collide with internal organs resulting in severe internal bleeding.
@@qazxswedcxzaqws Think about what you just said a little. How many fish do you see bubbling up to the surface firing a gun into the water? If fish don’t die, then a human will be fine. What you have highlighted can be true for cannons, not firearms. Fish don’t die when cannon rounds impact the water.
@danielcastiglione5328 Fish do only begin to float after they start to decompose. But after thinking about it again the lethal distance may only be just around 3 feet for the largest shockwave underwater due to the small scale of the bullet and the density of the water dissipating it much faster than air can.
@ so you agree the shallow end of the pool is enough to make bullets non-lethal? If you able to do the math on the energy a bullet makes underwater, you would quickly see, no human is going to die from the shockwave from a bullet…. Here is the formula. p = f ( W 1 / 3 / R). The stress of being shot at, far exceeds any effects of the shockwave.
"X" foot-pounds of energy stopping within less than two seconds means that the energy must be dispersed somewhere. The .308 illustrated that perfectly. The .223 also[9mm... All of them] Cool thing to watch.
The ballistic head makes it interesting, but I'd like to see a re-test where a ballistic gel cube is placed so that there's no where for the bullet to go but into the Gel. Systematically moving the gel cube back will allow for proper estimates of "how much water is bullet proof" for each round.
Super cool video! Fellow Indiana native here, and I can confirm that we will shoot from whatever seat is available. I've used the back seat of a van before because that's what we had on hand.
9:36 Sorry, but I'm a little distracted from the bullets in the water from all that scarring on your arm! Goodness me, I've been wondering what kind of lingering damage would be visible from the RPG episode, but holy cow! I'm very glad to see that arm's still usable.
Is that from an RPG accident? I literally thought he had poison oak all over his arm. Mine look exactly like that when I get caught in it. Takes about 2 months but it goes away completely, no scarring
try some subsonic rifle rounds too! The real underwater rifles shoot basically darts so longer projectiles at subsonic speeds I think is some part what is necessary for them to keep their speed and trajectory
@8:32 yall missed a very cool part about this round, it was spinning so fast and still had so much energy it basically stopped moving forward/horizontall, flipped on axis and the slight pedaling of the round acted like a propeller and the lead round actually went from falling to the bottom to almost exiting the top lol
Would've loved to have seen some of these rounds more than once. That 9mm FMJ was still cookin at 4-600 fps when it was near the skull. I think that had a good chance of being lethal if it hit
300 ft per second is generally considered to be the cut off for a projectile being dangerous. Of course, that takes into account the size of the projectile. You don't want to get hit by a car doing 300 ft per second!
@@floridagunrat1625it hit something hard enough to ding the copper jacket. At the very least, that should bruise if not break bone. It could still be lethal.
Red Ryder BBs go at 350fps, and are _usually_ not lethal* but will break skin. Now the 9mm bullet is of course much heavier, and thus still can deliver more energy, but spread over a larger impact area. *Exceptions of course apply - not all the brain is protected by nice hard skull bone.
@@sithus1966 In Private Ryan, I think those were much larger, higher power rounds from gun emplacements, not hand held firearms. Panzerbüchse 38 was an antitank rifle, for example, which could potentially penetrate a lot more water at lethal speed.
@@B.D.B. The actual RPM might not be appreciably faster, but the number of turns per inch (like 1 in 3) is pretty wild compared to everything else out there. And I would think it would be very interesting to see underwater in high speed, especially with something like an expanding copper solid.
Very cool and interesting episode. The slow motion showing the interaction from the water pressure has a lot of value and just looks cool. This is a late post but maybe, in the next box, make the opposite camera side of a flexible/white rubber material to absorb/flex from the water pressure or possibly make just the bottom a flexible material. You could also make a V shape so the pressure is directed at an angle and up but that may affect the view from the camera. I was also wondering if it is possible to make a bullet that could create some short-lived air cavitation which would allow it to flow a little farther under water.
I wasn't surprised by this. The ballistics of 9mm is one of the reasons I didn't bother looking at any larger calibers. It has penetration that's actually in excess of what anyone could need at short range and with the right loads you can mitigate that overpenetration to a certain degree if you live in an urban environment. More than enough for self defense, and the recoil is totally manageable.
I think you guys should've done it at around 45⁰ angle. No one shoots straight down to a pool, river, etc. I'm sure if y'all did that, you would cut the distance in half.
That's very shallow water, so the weight will not generate much pressure 🤔 You should try it again in water a few feet deep and see what the difference is? 🤓 lol
Hmmm. I get the pressure at depth idea, but these (most anyway) slowed down in the first few inches of water. Only the higher powered rifle rounds would have a chance of getting to more depth. But, along those lines, I do wonder if larger box would change results as the pressure “plume” hit the box almost immediately. Shooting into a pool or river or lake would allow the pressure to continue outward longer. If nothing else, the comparison would be interesting!
I'm a .45 guy if for no other reason, nostalgic reasons and respect to some folks no longer with us. When I see, hold, and shoot my 1911, I think of them. I carry a 9mm and I think this video proves that 9mm is a superior round when measured for penetration into the target. I was hoping you would also rest 9mm HP vrs the .45 HP. Very cool video, thank you for what you do.
That 45 JHP had a really neat effect. After the jacket pealed off it seems like it was able to move faster than the lead core because the lead core was being slowed down by the water while the jacket didn't have much resistance moving through the space behind it. You can see it catch up and try to pop up behind it which was really neat.
This reminded me of my military days. I served in the 80s and my Army issued weapon was the M16 which chambered the 223. It was well known the 223 tumbles when it hits flesh.
Alright you guys. That was very interesting to watch and see how water an effect of atmosphere and water 💧. Congrats on what you are doing with your craft 👍🏼
I would be interested to see you try some of the Fort Scott Munitions TUI rounds in this test. They are designed to tumble in fleshy water based material. They are solid bullets, which would keep them from breaking apart or deforming once hitting the water.
You should try measuring the concussive forces from the water, even with a bullet not striking him doesn't mean he wasn't in trouble especially when the water is moving so much it lifted him up and out of it!
You guys should totally do some Lehigh defense rounds like the pistol caliber and 4570 rifle. It would be very interesting to see the fluid transfer monolithic on high-speed.
Read something about the D-Day landings, and how some people did tests more recently, with the MG-42 (I think) and how much water was needed to slow down the bullet. And some stories from vets telling how some rounds would bounce off them cause they slowed down enough.
If you angle the back wall outward you will reduce the energy transmitted to the front Lexan panel. Other options are possible to reduce that over pressure and absorb the hydro-static energy..
some Norwegian company made underwater bullets that use cavitation. they can apparently go 240 ft under water, and still be leathal. I've heard of a budget version where you flatten the end of an ap round. I think it would be cool to see that next
More please. Also, we need extensive bullets shot at varying angles on the surface. A few years back there was amazing footage on yt but it is gone. Some shots go in, look like they stay in but come back out at an angle. There are a few cases were people got shot like that. Lots of people underestimate that. Have some of the lehigh all copper bullets on the follow up video.
Hi, I remember an episode of mythbusters and they also had high power bullets braking apart at the surface. And if I recall correct they also tried it with slow moving bullets out of blackpowder rifles and they were much more effective. Perhaps you can do a similar test, with your camera equipment, that would look so awesome!
I wonder how much variation if there would be using different type of tape, individual boxes for each round or using some sort of plastic membrane instead
I like your ideas of underwater shots. The different calibers, the distance they will go; and the various bullet designs all make the results fascinating. With enough repetition, you could write the average statistical results. I don’t know what those results would or could be used for, but they would definitely be interesting. I would also like to see the comparison of results between potable water and sea water. I would expect that with enough testing you could write a constant coefficient of the reduction in travel distance in sea water vs potable water. Thanks for the entertainment and the education. BTW: you might try a rubber “door” on the tank to see if it would be self sealing (much like self-sealing gas tanks on military aircraft). Some velocity would be lost by firing through the rubber, but not nearly as much that is lost now as the water escapes in the opposite direction of bullet travel. Meaning that as water rushes backwards to escape through the entrance hole, it drags the bullet with it. That is like shooting directly into an oncoming wind. There is a similar energy loss, or at least interference, by water being splashed out of the top of the box. Making a taller box with a lid will decrease the loss of water. Also the same amount of water needs to be in the tank at the time of each shot. More water increases the mass, which slows the bullet; while less water. will decease the mass allowing an increase in the speed and travel distance of the bullet. On the other hand, you can choose not do any of this mental masturbation, and just see how much water you can blow out of the water box. 😊😊
Hope you guys enjoyed! Check out our new merch here: www.bunkerbranding.com/pages/ballistic-high-speed
What else would you like to see fired underwater?
A bigger setup similar to this and 50 BMG
minigun, or something automatic. See if the bullets can punch a big enough cavitation hole that other bullets can travel through and penetrate deeper
DEFINITELY do this again!!! With thicker glass. Lol
Incendiary rounds! They may detonate when impacting the water?
Why move the head further back. You defeated the purpose of the video.
It's crazy how high quality your content is. I remember watching the mythbusters episode on this years back and though their test was super interesting the quality of your content blows it out of the water
hispeed images weren't as high def 15 years ago, imagine that.
I see what u did there
Literally hehehe
So amazing. I’m so grateful for Mythbusters because it paved the way for stuff like this. Knowing these guys grew up on it, now they’re taking it to the next level. I love it.
Ba-Dum-Tissss
One of my favorite episodes. To me bullets flying through water seems like one of the highest forms of art.
Gods art
You guys have by far, the best high-speed ballistic content on the tube. It's captivating!
Check Slo-Mo Guys doing their 155 mm slo-mo shot...
It's cavitating
Ever watched the slowmo guys gun videos?
A few years ago Mythbusters fired a number of rifle cartridges into a swimming pool. All of the high velocity rifle bullets broke apart, even steel jacketed bullets, on contact with the water. Pistol bullets went the furthest in the water. It doesn’t take nearly as much water to protect you from high powered rifle bullets as it does slower moving pistol bullets.
Counterintuitive but the proof's here!
Yup and an arrow can travel through and kill ya
Only thing is, this doesn't really tell the whole story.
Some years ago I read through a us army (or maybe it was usmc) study on this. If memory serves it was done in the aftermath of ww2. I seem to recall that testing was on pigs and they tested various calibers.
Here's the thing - It's pretty common knowledge that explosions under water are pretty dangerous. Because your meat parts are a pretty similar density to water, the shockwave gets transferred right through you until it hits something with a different enough density and then shreds that. The shockwave from bullets hitting and cutting the water around you basically do the same thing.
In the testing, they found a whole lot of damage to the organs, especially the lungs, and blood vessels from pretty surprising distances. Basically, you might be submerged a couple of feet and a burst of 30 cal mg fire hits the water above you. It shreds your lungs and you drown in your own blood without even having a mark on you.
@@ColonelSandersLitethat's fuckin' terrifying
@@wordswift_2011 Yeah, it kinda is. That's exactly the reason that one stuck with me.
Cool video, for scientific purposes tho you guys should increase the vertical depth of the tank. Right now the water can easily be displaced which creates the cavitations. You would get very different results I think if you had a 2 foot deep tank
correct. pressure increases.
This experiment is in a small contained space . In a place like a lake or river the cavitation would not be 1/10 in that distance .
If you are 36” below the water surface ,you are pretty much safe from anything fired here.
I was going to point that out too. The water can escape too easily, so doesn’t at all relate to ”how deep you would need to be to survive”, as all these tests is at a depth of 3-4 inches. If they had stood the box up (with 4 walls) and shot straight down, it would have yielded a completely different result.
You and slo mo guys have some of the best slow motion content on YT. The audio mixing for the slo mo is done extremely well. Makes it very satisfying.
You're the only weapon channel I watch
Perfect pacing, perfect content, and fun personalities that don't distract from the meat of the content
The Mythbusters tried water vs bullets.
Rifle rounds self-destruct on contact, pistols penetrate a few feet, and a shotgun flooded their shop by blowing the bottom out of a 10-foot deep tank.
While I was about to make the same comment, I remembered that was almost 20 years ago. High speed has grown exponentially. Also, the shotgun blew out the sides of the Mythbusters tank, not the bottom. The shockwave broke the “glass”, not the slug hitting the bottom.
And even the .50 cal disintegrated before it got too far... albeit with a ginormous explosion of water from all the energy :)
As I recall, they determined the faster the bullet, the less water needed to stop it because hitting the water at hypersonic speeds was like hitting cement.
@@MH2ga.12 Yeah, that's where they shot the 50 cal... pretty much the same results, the deepest penetration were the slower velocity hand guns and even the 50 cal tore itself apart in the first couple of feet.
@@peterkoester7358 high school physic. Right 🤓 Anybody that's done a belly flop into a swimming pool has felt the effect of H2O incompressibility.
Just seeing the reaction of the bullets going through water , and the delay between sound and all the detail.
Amazing
Thanks for making this, I also want to appreciate your hard work after each shot. Drying, sealing and Filling the tank again. Setting up camera etc. great content
If/When you guys build another box, don't paint the inside flat white. Go for a 20-30% off-white grey. That way, light interaction with the water will contrast with the background better! Great video, guys!!! Made my lunch break at work more enjoyable!
Edit: go Gun-metal Grey!!! Yeah... that'll do...
Good suggestion. A nice Battleship Grey
How will it contrast better..? the entire background is practically Grey!
Why don't they use a vertical box, for not refilling water every time?
Noice
The harder you hit water, the harder it hits back.
wow, tell me more stranger.
wow, tell me more stranger.
wow, tell me more stranger.
@@thehow-tofactory8008 wow, tell me more stranger.
Ok. .
Man 8.6 blackout would be such a cool round to check out like this high speed. Shot from Q the Fix its spinning 500k rpm. Would be sick to see what that does to a soft target.
You have the best idea by far with that logic.
8.6 is spinning unbelievably fast for its size which could be very interesting in water
I literally came here to say the same thing! Mass and twist are going to be the largest factors in water pen.
trying out tungsten and some other projectiles would be cool too.
GarandThumb made that round look so scary. That thing isn't even supersonic and it's destroying things. Imagine it at around twice that speed.
@@A-A-RonDavis2470it only reaches 500k rpm if its supersonic.
The subsonic is basically as many rotations as a regular rifle round
Thanks!
Thanks!
I found your channel a short while back when you guys were at around 100k subs, and I immediately knew this channel would blow up very fast.
You guys 100% deserve the millions more soon to come
Like I've said many times before... This is the best high-speed channel on RUclips! Keep the great content coming guys!
Slo-mo guys X ballistics high-speed crossover when
@ÆNorthcutt Nope you're wrong. Slo Mo guys are by far " the best high-speed channel on RUclips"
Your content is absolutely unmatched. It is awesome!
Much appreciated!
14:27 if the second version of the box is V shaped, the water won't expand against parallel walls, it'll just be flung upward, causing less damage to the box.
For version 2 of your box, I'd recommend rather than bolting the plexiglass to the steel box, have it held in place by springs. That way when the lateral force comes, the springs extend, letting out some water and relieving much of the pressure before snapping back into place.
One of the coolest gun channels hands down!
As a fellow Hoosier, I always thought the local scenery looked awfully familiar in your videos. Folding chairs + tripods are the comfiest way to shoot, can confirm
Dont know what part Indiana they are from but we need a collab with them on the mac channel if they haven't done it already .
The slow blade penetrates the shield. Great video.
Im always super high when i randomly find one of your videos that i havent seen. Thank you.
I’m curious volume comes in to play here like the ripple effect of each of those ripples have very little distance to travel so therefore the concussion is larger whereas if a bigger tank per se or a live situation like a lake or a pool that it would disperse more because of those waves through the water, have farther to travel, instead of coming back and almost creating more turbulence is is so cool to watch being able to see the amount of force that that small bullet is putting it it’s just this small amount of volume of water is amazing. Totally can appreciate all the hard work that goes into making such a video. Thanks for sharing.
One of the, if not THE best channels on RUclips! Easily #1 for high-speed and guns!! I just love watching these videos!
That initial pistol shot yawing leads a lot of credence to old stories of people surviving being shot out by hiding in water.
Credence Clearwater Survival...
You can't do anything with a bullet in water when it hits the water it's like hitting steel loseing all its energy instantly it may hurt at about a ft
But that's it
@@HDSME The problem once you're in water, is that the shockwave is what could kill you, and that would be a very ugly death.
@Acuas no I do not think so they out of energy 3 to 4 ft nothing left
Love this channel. I am also very happy and grateful to see him doing so well since the accident. That takes one strong person. Respect.
It is clearly the change from air to water, the speed decreases as the ammunition moves towards the normal straight line. this is beautiful
You got my sub when you followed up with the m855a1 after the .223. Awesome video
I remember an SAS guy saying you can be shot underwater, with the “experts” saying the opposite.
Was surprised by this result, lethal deeper than I would have thought.
I've ALWAYS wondered about this topic. Thanks for saving me from boredom during long hours spent on the tractor BHS!
We do what we can!
Yes‼️ Go all the way, thicker Plexi, more screws to handle the pressure and ALL the BOOM 💥 BOOM!
Tf did you say?
@@johnnyfingersgood6927 With a YT handle like yours, I know you know exactly what I said. 💥
@@johnnyfingersgood6927thicker glass more screws bigger boom
I get it know
Boom, boom all the pressure, handle to screws, more plexi, thicker all the way!
Shooting into a pool, the water pressure is going to be higher. The bullet box doesn't have enough volume.
Pressure only depends on depth, not volume. And as water does not compress a lot, I think depth won’t make a big difference either. But you may have a point because shock waves won’t be able to propagate in a small tank.
@@didfet5496Mythbuster already did that.. long story short if you want to survive a shooting just jump into the lake or river and swim away.
Pressure from depth is static pressure. A moving bullet entering water is.... well kinda nonstatic.
A larger tank has larger walls. The same amount of energy over a larger area will result in less energy per area compared to a small tank. And in the end less energy per area leads to less force per area aka pressure.
@@jendriktrager4996 larger pools will surely have larger walls but surface area is proportionate to square while mass increases by cube thus pressure will definitely increase as the water body gets larger.
@@didfet5496water does not compress that's why it applies greater pressure. A bullet travelling through a water body will experience greater resistance the deeper it goes.
9:50 As someone who watch a lot of SpaceX lauched, seeing how fast this speed drop put a smile on my face. People have no idea how much is the effect of drag while slowing something down. You see a Falcon 9 light 3 engines and barely slow down from 8000km/h to 6000 while just the atmospheric drag allow bring it down to just below 500km/h when it fires its engines for the final time before touchdown. And here we're talking about air, well...that's water to you, 2600 to 0 in...30 centimeters.
.556/.223 were designed to tumble and dump all their energy within the body. That's why the military chose it in the 1960s. The 7.62x51 caused a lot of damage, but overpentrated before dumping it's energy. I was wondering if it would make it far.
556. is actually great at penetrating body armor. thats why they used it. 556 punches through what 7.62 wouldnt. small hot and fast beats slow hot and big every time regarding body armor. the 556 is accurate out over further ranges than the 7.62. less bullet weight less bullet drop over distance. civilians arent experts on anything firearms related. opinions dont make people experts.
@@nomercyinc67835.56 was adopted before body armor was even thought about being a thing. The only thing that was considered for penetration was Soviet steel helmets at 500 yards with the steel penetrator. (Which wasn't a great feat by any means at all). 5.56 was chosen because more more could be carried by the foot soldier than what could be carried with 7.62x51 and also rifles were more manageable on auto fire than what they were with 7.62x51. 5.56 is only more accurate at distance than 7.62x39, 7.62x51 more accurate than 5.56 at further ranges. 7.62x51 can reach and still be useful at much greater ranges than 5.56 is even capable of obtaining. So guess what Junior you need to read your previous comment in front of a mirror back at yourself and go back to school boy.
You need mass for momentum and range but the most important parameter is: BC
@@nomercyinc6783civilians aren't experts on anything firearms related? Thats an ignorant statement. I am an infantry veteran, and I can point you in the direction of a handful of civilians in my area who have likely forgotten more about firearms/firearms related things than you and I could ever learn. Nice way to show your ignorant opinion proves your point about expertise 😂
@@SAR0311 bet he was chair force 🤣
Thank you for sharing. Too many people have been watching movies and think bullets travel through water… think you have proved it doesn’t take much water to make a bullet none lethal. Shallow end of a swimming pool is enough. Not only don’t bullets travel through water well; they often skip off the surface. This is why they teach you in hunters safety if a body of water is behind your target, don’t shoot.
Supersonic rounds react badly to water... if I remember MB it skipped if you got below about 30 degrees offset. I wonder what a subsonic .223 would look like.
All of these bullets are still very lethal, the energy is being transferred into shockwaves that can travel very far and will transfer through human tissue and then collide with internal organs resulting in severe internal bleeding.
@@qazxswedcxzaqws Think about what you just said a little. How many fish do you see bubbling up to the surface firing a gun into the water? If fish don’t die, then a human will be fine. What you have highlighted can be true for cannons, not firearms. Fish don’t die when cannon rounds impact the water.
@danielcastiglione5328 Fish do only begin to float after they start to decompose. But after thinking about it again the lethal distance may only be just around 3 feet for the largest shockwave underwater due to the small scale of the bullet and the density of the water dissipating it much faster than air can.
@ so you agree the shallow end of the pool is enough to make bullets non-lethal? If you able to do the math on the energy a bullet makes underwater, you would quickly see, no human is going to die from the shockwave from a bullet…. Here is the formula. p = f ( W 1 / 3 / R). The stress of being shot at, far exceeds any effects of the shockwave.
Mythbusters all over agein.
50 bmg also get destroy after 2.5 feat
Who cares? The cameras are better, and it’s still cool as hell
That was a great episode. 😅
Maybe. But kinda better because it's not over dramatized like myth busters they are just straight to the point
Wicked cool. Seeing the patterns produced is fantastic.
"X" foot-pounds of energy stopping within less than two seconds means that the energy must be dispersed somewhere.
The .308 illustrated that perfectly. The .223 also[9mm... All of them]
Cool thing to watch.
Full wadcutter 38spl would be interesting.
The ballistic head makes it interesting, but I'd like to see a re-test where a ballistic gel cube is placed so that there's no where for the bullet to go but into the Gel. Systematically moving the gel cube back will allow for proper estimates of "how much water is bullet proof" for each round.
That was amazing! Never would have thought that the pistol caliber FMJ would perform that well!
Super cool video! Fellow Indiana native here, and I can confirm that we will shoot from whatever seat is available. I've used the back seat of a van before because that's what we had on hand.
9:36 Sorry, but I'm a little distracted from the bullets in the water from all that scarring on your arm! Goodness me, I've been wondering what kind of lingering damage would be visible from the RPG episode, but holy cow! I'm very glad to see that arm's still usable.
Is that from an RPG accident? I literally thought he had poison oak all over his arm. Mine look exactly like that when I get caught in it. Takes about 2 months but it goes away completely, no scarring
try some subsonic rifle rounds too! The real underwater rifles shoot basically darts so longer projectiles at subsonic speeds I think is some part what is necessary for them to keep their speed and trajectory
It be interesting you could measure the hydrostatic pressures transferred to the water. Also appears harder bullet hits more water pushes back
@8:32 yall missed a very cool part about this round, it was spinning so fast and still had so much energy it basically stopped moving forward/horizontall, flipped on axis and the slight pedaling of the round acted like a propeller and the lead round actually went from falling to the bottom to almost exiting the top lol
Would've loved to have seen some of these rounds more than once. That 9mm FMJ was still cookin at 4-600 fps when it was near the skull. I think that had a good chance of being lethal if it hit
Agreed
300 ft per second is generally considered to be the cut off for a projectile being dangerous. Of course, that takes into account the size of the projectile. You don't want to get hit by a car doing 300 ft per second!
@@floridagunrat1625it hit something hard enough to ding the copper jacket. At the very least, that should bruise if not break bone. It could still be lethal.
Red Ryder BBs go at 350fps, and are _usually_ not lethal* but will break skin. Now the 9mm bullet is of course much heavier, and thus still can deliver more energy, but spread over a larger impact area.
*Exceptions of course apply - not all the brain is protected by nice hard skull bone.
Ok. .
Excellent video. This busts the myth of the 7.62x39 bullets zipping through the water 10-20 feet down in Lethal Weapon movie…..
Or the rounds killing the soldiers underwater in Saving Private Ryan.
@@sithus1966 In Private Ryan, I think those were much larger, higher power rounds from gun emplacements, not hand held firearms. Panzerbüchse 38 was an antitank rifle, for example, which could potentially penetrate a lot more water at lethal speed.
@@jrhoadleythey were being shot at with mg 42s from a good distance who knows if they would have enough power
Seeing the bullets spin made me think of how cool it’d be to see 8.6 blackout in highspeed with the 1:3 twist barrel
It wouldn't be spinning any faster. The twist rate is high because the velocity is low. The actual spin rate is comparable to "normal" cartridges.
@@B.D.B. The actual RPM might not be appreciably faster, but the number of turns per inch (like 1 in 3) is pretty wild compared to everything else out there. And I would think it would be very interesting to see underwater in high speed, especially with something like an expanding copper solid.
Very cool and interesting episode. The slow motion showing the interaction from the water pressure has a lot of value and just looks cool.
This is a late post but maybe, in the next box, make the opposite camera side of a flexible/white rubber material to absorb/flex from the water pressure or possibly make just the bottom a flexible material. You could also make a V shape so the pressure is directed at an angle and up but that may affect the view from the camera.
I was also wondering if it is possible to make a bullet that could create some short-lived air cavitation which would allow it to flow a little farther under water.
Wow I really love this video, it really tells me what I tell some people, that 9mm has a much longer travel distance then the 45 👏👏👏👏👏
I wasn't surprised by this. The ballistics of 9mm is one of the reasons I didn't bother looking at any larger calibers. It has penetration that's actually in excess of what anyone could need at short range and with the right loads you can mitigate that overpenetration to a certain degree if you live in an urban environment. More than enough for self defense, and the recoil is totally manageable.
🤓🤓🤓
I think you guys should've done it at around 45⁰ angle. No one shoots straight down to a pool, river, etc. I'm sure if y'all did that, you would cut the distance in half.
That's very shallow water, so the weight will not generate much pressure 🤔 You should try it again in water a few feet deep and see what the difference is? 🤓 lol
Hmmm. I get the pressure at depth idea, but these (most anyway) slowed down in the first few inches of water. Only the higher powered rifle rounds would have a chance of getting to more depth. But, along those lines, I do wonder if larger box would change results as the pressure “plume” hit the box almost immediately. Shooting into a pool or river or lake would allow the pressure to continue outward longer. If nothing else, the comparison would be interesting!
I wonder if the the head being closer to the opening changes the compression dynamics of the water any?
I have the same doubt
I'm a .45 guy if for no other reason, nostalgic reasons and respect to some folks no longer with us. When I see, hold, and shoot my 1911, I think of them. I carry a 9mm and I think this video proves that 9mm is a superior round when measured for penetration into the target. I was hoping you would also rest 9mm HP vrs the .45 HP.
Very cool video, thank you for what you do.
Skip to 3:40
3+ feet and you are golden 95% of the time. Water OP
Fill that thing up with liquid hydrogen and see how far the bullet goes through
The audio in slow mo is satisfying 😁❤
That 45 JHP had a really neat effect. After the jacket pealed off it seems like it was able to move faster than the lead core because the lead core was being slowed down by the water while the jacket didn't have much resistance moving through the space behind it. You can see it catch up and try to pop up behind it which was really neat.
What happened to your arm 3:18
He got blown up by a rocket launcher. It's on the channel
Rpg exploded while he was using it.
He exploded
CALL OF DUTY please take notes I should never be killed underwater again!
This reminded me of my military days. I served in the 80s and my Army issued weapon was the M16 which chambered the 223. It was well known the 223 tumbles when it hits flesh.
That last shot was awesome!😮😮😮
Man idk how this channel doesn’t have at least a million subscribers yet
Alright you guys.
That was very interesting to watch and see how water an effect of atmosphere and water 💧. Congrats on what you are doing with your craft 👍🏼
Great vid, but I think for a more accurate study, the tank should be fixed to the ground to prevent lateral motion when the bullet meets the water.
Use saran wrap to cover the end of the water box.
Thank you guys for this very interesting high res vid!
I would be interested to see you try some of the Fort Scott Munitions TUI rounds in this test. They are designed to tumble in fleshy water based material. They are solid bullets, which would keep them from breaking apart or deforming once hitting the water.
Great study on how physics work!
This makes me think how far the bullets will get in an anti-gravity environment.
That video-camera camera 📹 is the ish 👌🏾 🙌🏾 💯
Slow mo is art🤩❤
Love the video! What will happen at an angle?
No one will be flat above a water target, always and angle. Thanks for your hard work
You should try measuring the concussive forces from the water, even with a bullet not striking him doesn't mean he wasn't in trouble especially when the water is moving so much it lifted him up and out of it!
You guys should totally do some Lehigh defense rounds like the pistol caliber and 4570 rifle. It would be very interesting to see the fluid transfer monolithic on high-speed.
@13:25 -
"I want him dead!"
"Dead?"
"Dead!"
Sounded like a mob boss 😆
Mega! So stunning and informative. Very good footage and quality. Thank you for such a superb episode. 👍🏼👍🏼
one of the coolest videos I have ever seen. Thanks guys for sharing.
Very cool footage. I think the small box prevents the energy from being able to escape such that it will skew results, though.
Water tank soo much cooler than balistic gel, there is so much more to see! Good Job!
The bullets fragmenting on impact are the ones who does more damage and difficult to remove if you survive.
16:33 i want to see you guys build a long and big enough water box that you can fire a cannonball into
That fragmentation is what it does inside a body when it hits. Wow.
Read something about the D-Day landings, and how some people did tests more recently, with the MG-42 (I think) and how much water was needed to slow down the bullet.
And some stories from vets telling how some rounds would bounce off them cause they slowed down enough.
If you angle the back wall outward you will reduce the energy transmitted to the front Lexan panel. Other options are possible to reduce that over pressure and absorb the hydro-static energy..
some Norwegian company made underwater bullets that use cavitation. they can apparently go 240 ft under water, and still be leathal. I've heard of a budget version where you flatten the end of an ap round. I think it would be cool to see that next
More please. Also, we need extensive bullets shot at varying angles on the surface. A few years back there was amazing footage on yt but it is gone. Some shots go in, look like they stay in but come back out at an angle.
There are a few cases were people got shot like that. Lots of people underestimate that.
Have some of the lehigh all copper bullets on the follow up video.
you should have added pressure sensors inside the tank, that would have given some interesting numbers as well on top of the awesome footage
15:10 Indiana represent! I even thought it looked like an Indiana country road and house earlier in the video! 😂
Hi, I remember an episode of mythbusters and they also had high power bullets braking apart at the surface. And if I recall correct they also tried it with slow moving bullets out of blackpowder rifles and they were much more effective. Perhaps you can do a similar test, with your camera equipment, that would look so awesome!
He survived the bullets but I doubt he survived having his head underwater the whole episode haha
Really cool stuff guys! 👍
Very interesting.... I like how you don't waste time on one scene... It makes me watched everything
I wonder how much variation if there would be using different type of tape, individual boxes for each round or using some sort of plastic membrane instead
I like your ideas of underwater shots. The different calibers, the distance they will go; and the various bullet designs all make the results fascinating. With enough repetition, you could write the average statistical results. I don’t know what those results would or could be used for, but they would definitely be interesting. I would also like to see the comparison of results between potable water and sea water. I would expect that with enough testing you could write a constant coefficient of the reduction in travel distance in sea water vs potable water. Thanks for the entertainment and the education. BTW: you might try a rubber “door” on the tank to see if it would be self sealing (much like self-sealing gas tanks on military aircraft). Some velocity would be lost by firing through the rubber, but not nearly as much that is lost now as the water escapes in the opposite direction of bullet travel. Meaning that as water rushes backwards to escape through the entrance hole, it drags the bullet with it. That is like shooting directly into an oncoming wind. There is a similar energy loss, or at least interference, by water being splashed out of the top of the box. Making a taller box with a lid will decrease the loss of water. Also the same amount of water needs to be in the tank at the time of each shot. More water increases the mass, which slows the bullet; while less water. will decease the mass allowing an increase in the speed and travel distance of the bullet. On the other hand, you can choose not do any of this mental masturbation, and just see how much water you can blow out of the water box. 😊😊