Optimal for what purpose? It obviously works better out of a longer barrel like every bullet does. You will need to pick a barrel length that is a compromise of velocity and handling for your intended target type and engagement distance.
He says they tried it from a 26 inch down to a 12 inch barrel but never once did he mention specific ballistics at any barrel lengths. That guy should run for office.
That means it doesnt have a change in velocity that isnt basically linear. That does not mean that it doesn't gain velocity if you go longer, it just means there isn't a disproportionate handicap going shorter, to a point im sure. Ex in 556, going from 12" to 9" there is a large handicap in velocity vs length, as opposed to 16->20" where there is modest and basically linear gains
I like the cartridge on paper and am a big Hornady fan. They really made the Creedmoor a great cartridge with their support. This may be the best cartridge for a standard bbl AR. The marketing in this video lacks. One cannot simply say “it is the greatest and will make all your dreams come true” and link the same chessy little simplistic ballistics chart to all comments.
@@blckandwhtknight the reason why they used an 18in zapper barrel for the military has nothing to do with it being the best wink barrel for the AR-15 and this particular cartridge. The 18-inch barrel was part of the contract Hornady signed When developing this cartridge for the military. The military tells the manufacturer of the product what they want not what the manufacturer wants to give the military. The military picking an 18in zapper Barrel is simply because it is a bigger pain in the butt to carry a 20 or 24 in zapper rifle in country. It's the same reason the military uses the AR-10 with an 18-inch barrel it's shorter more compact easier to get in and out of vehicles whether it's a Humvee or an aircraft such as a Blackhawk. I want to know what the velocities are at the standard barrel length of 16 in 18in 20in and 24 in. Then you can decide what application you are using the rifle for and make your barrel length according to the type of work you're doing. Echo
He actually said they tested from 12''-26'' and they didn't see a real concernable difference obviously your use for this round should be the deciding factor 18" dmr to 26" long range it should be good to boot.
According to THEIR testing, a 12 inch barrel gives about 2350fps at the muzzle and goes almost linearly up to 2850 with a 28 inch barrel. 22 inches appears to be where you hit the point of diminishing returns with about 2700ish fps at the muzzle.
glad to see some more new cartridge additions, been a while, as a reloader and p.o. ackley fan i appreciate NEW STUFF, for some of the crowd posting i apologize for their lack of study, if you have the muzzle velocity, bullet weight, coefficient you can get YOUR OWN DATA, have a nice day and thanks Hornady!
Hornady blew a golden opportunity to sell every barrel length (12"-26") they tested. That's like running the kickoff back 105yds and purposely dropping the ball at the 1yd line.
Okay you guys are giving us the same information that most AR builders already know. We know if you're going for precision rifle work the longer the barrel the higher the velocity the further the cartridge will carry at supersonic. You guys failed to tell us velocities of this cartridge at certain bullet weights out of certain Barrel lengths. If you guys are promoting a new cartridge the best way to do it is transparency give us all the information and numbers and let us make our own decision on whether this cartridge is worth its weight in gold or if it's just another 6.5 Grendel. Just some ideas for you guys not trying to break your balls just trying to figure out actual information about this cartridge which seems to be very hush-hush. Please Release the data on this cartridge and lay off of the advertising and promotion type work. We've seen a lot of new AR-15 cartridges in the past claiming to be the next Golden Child and they all seem to have fallen flat on their face either by the people who and design them and engineered them or by the actual pick up of the cartridge by the people who love modern sporting rifles like I do. Take care, and good luck with the new cartridge can't wait to actually see some factual information. Echo
Did you get the ( 22″ 6mm ARC Stainless - Satern’s Liberty Medium Contour ). ? I’m on the fence about what barrel to order and that is one I’m considering. Thanks
As far as military usage goes, I'd like to see how the 6mm arc does with a 14.5 in barrel. The 16.5 in (and up) barrel lengths are too long for effective military use regarding close combat and weight savings for our troops.
Seeing as the 6.5 Grendel was designed with 24" barrels in mind, and its still an effective hunter out to 300 yards from a 12" barrel (effective defined as 123 gr above 1800 fps or 800 ft. Lbs with proper shot placement up to deer). And seeing as the 6mm arc is faster and flatter, add 2 inches, I'm pretty sure it'd do great in a 14" bbl. Though I think it'd be even better in a 16". Im guessing that at the muzzle you're still looking at around 2400-2500 fps and 1400-ish ft lbs from a 14" bbl, but YMMV.
It's been 4 years, but I've run the numbers for you. The shortest barrel length 6 arc will stay supersonic to 1000 is 12" using the hornady A tip bullets loaded with 26 grains of varget. It does this with 2200 fps muzzle velocity and 1182 ftlbs of energy, about the same as 5.56 out of a 20" barrel. The high BC of .604 is really what carries it.
Looks like a fantastic cartridge and I can't wait to jump on the wagon, but it doesn't outperform the 6.5 Grendel by much. My 18" Grendel pushes the Sierra 107's at 2750. Either the 6 ARC can match that velocity with the 108's out of an 18" barrel or it can't. What good is a slightly better BC if the bullet goes 100 fps slower? My guess is the two cartridges are the exact same performance.
I’m not a huge fan of this cartridge right now because of weak bolts and lack of 30 round magazines. But, you are comparing light for caliber 6.5 vs heavy for caliber 6mm. You can’t do that, to be fair and an accurate comparison you would need to compare light for light or heavy for heavy. Compare the sectional densities. From what I’ve heard, the main benefit to the 6ARC over the 6.5G is the Grendel can’t use the heavy for caliber bullets (140gr+) which have the higher BC, at a high enough velocity. The 6 ARC was designed for the heavy for caliber bullets and can use them at a high enough velocity to utilize the high BC they bring to the table. Out of long (26-28”) barrels, the 6ARC runs the same velocity (2750fps) with heavy for caliber bullets (105-108 gr) as a 6.5 CREEDMOOR with heavy for caliber (140-147 gr) bullets. For proper velocity, 6.5 is just too big for the AR-15 class of cartridges. For comparable loads, the 6ARC, 6.5Grendel, and 6.8SPC all have roughly the same muzzle energy, it’s at distance where they distance each other. It’s taken awhile to get quality information about the cartridge since release
@@andrewhenley2161 But BC grows with caliber. Heavy-for-caliber 6.5 mm bullets have greater BC than heavy-for-caliber 6 mm bullets of the same design. Hornady 6 mm 108 gr ELD match has BC of 536/270 (G1/G7), Hornady 6.5 mm 140 gr ELD match has BC of 646/326. 6.5 mm caliber overtakes the BC of 108 gr 6 mm with 130 gr bullet already. It's because mass is proportional to the cube of caliber and section is proportional to the square of caliber, so sectional density of similarly shaped bullets is proportional to the caliber.
Hornady reloading data shows 2682 fps from 24" barrel! How are you getting more velocity from significantly shorter barrel? Is that from AR15? Hornady does show both cartridges having about same velocity with same bullet weight.
@Frank Bonazza III which particular high BC Creedmoor cartridge or bullet? 140gr .264 SMK is a fatty for some reason with thicker ogive and low BC because of that, 142gr SMK of the same caliber has much higher BC.
I have a 6.5 Grendel and I'm very pleased with it but the one drawback for me is how expensive .264 caliber bullets are in what I consider its weight class of under 130 grains. I'm rather anxious to try the 6mm ARC but I don't have a big budget. The only barrels I see available right now are from some of the more high-end barrel makers. When would you estimate some of the more budget friendly manufacturers to have 6mm ARC barrels available?
My question is what does this cartridge do better than the 6.5 Grendel besides producing a little bit more speed due to the fact the bullet isn't as heavy. My 20in 6.5 Grendel is still supersonic at a thousand yards. Don't really understand why all of a sudden we've gone from 308 Winchester to 6.5 Creedmoor 6.5 Grendel now we're going into the 6 millimeter this seems like a fad. Not to bust your cojones but I hope this cartridge doesn't feel like the 224 Valkyrie does.
180 FPS is not exactly "a little bit more speed". To put it in perspective 30.06 is 150 fps faster than 308 and 300 win mag is 210 fps faster than 30.06 and there are big differences between all three. (That's comparing Hornady 178gr ELD-X on all 3) When you add 180 fps and you improve the BC at the same time it's going to make large differences downrange and it's going to do it with more energy.
I know most barrel builds use rifle length gas for 18" and above. I would like to try a 18" with mid-length gas on the 6mm ARC . My question is, is that advisable or will that hurt your bcg or hunting grouping shots?
SOCOM went with the 18 inch Proof Research Carbon in their Barrett Rec7's. At $920 a pop at retail for the barrel. Personally I'm looking at 20 inches.
Kotaboy32 has a video up on RUclips of him shooting his proof research carbon fiber Barrel. The groups are not impressive at all. Not at all. And that guy can shoot. I've seen him post some pretty nice groups with his JP.
Hawaiian gunner - obviously SOCOM was concerned about weight in going with Proof. If you’re humping a full battle load up and down the mountains of Afghanistan a pound on the front of the rifle is a big deal.
@@petersouthernboy6327 hell yeah it makes a difference. I was just really hoping for better accuracy from Hornady Factory ammunition. I'm getting incredibly tired of handloading separate ammo for each one of the many many many many many many many guns I own. It gets to be a fucking pain in the ass. And trust me I could have added a lot more many's in there! Lol. I'm getting old and tired and lazy. Been reloading for so long you end up with a giant pile of crap that just ends up taking up space. And a whole bunch of boxes of ammo with Sharpie writing signifying which gun it belongs to even though they're all the same caliber. It just gets old.
@@tofan2622 I mean the 400-700 yard range. 6.8 spc just doesn't have the BC or velocity at that range and it's the same range where 5.56 kinda dies. 6.5 Grendel is amazing at those ranges as is 6mm ARC. Both are supersonic out to 1k or beyond.
Can we please have the data stats/graphs on set barrel lengths, with a variety of projectile weights, for the velocities, energy and bullet drop, at say; 200, 300, 400, 500, 600, 800, 1000, 1200, 1500, 1800yards? Barrel velocity is nice, but it is also good to be able to compare data down range.
I guess I will wait for reloaders to have vids up...which can be mo the to years. Johnny's reloading bench is epic for all of the details, including powder types. Now, to see if he can get onboard this hype train.
Thank you very much for this chart. The last thing I want is an AR with a 29 or 30 inch barrel. And I have to say a lot of the videos online the groups are not looking good at all. 2 moa seems to be a standard. And that was out of several different proof research barrels. This is starting to look like a 224 Valkyrie situation
Is there a general rule if bolt gun 6arc will throw a 100 grainer faster by 100-150fps over the same barrel length gas gun? Would 20” barrel in a bolt gun come close to the Hornady stated velocity for 103gr ELDX 24” test barrel claiming 2800fps (a load still for gas guns) that I don’t really see out of gas guns at all?
Any specifics?? This generalization doesn't give us much. What velocities were you guys getting using the 108s in 12-14 inch configurations? 18-20? 22-24? I know a few people that are worried the shorter tubes will rob velocity worse than the 6.5 grendel due to the smaller bore. Others really want this to work because a 12" 6mm gas gun would be AMAZING for a ranch/coyote gun if velocity is adequate.
So the chart doesn’t help me. Will it work good as a 12.5” ranch gun for coyotes and deer? And at what ranges will it have the energy to drop coyotes and deer? Thanks
I guess Hornady wants this cartridge to go the way of the 357 maximum and the 45 Winchester magnum, don’t provide anybody with brass and keep the ammo prices ridiculously high.
So the chart doesn’t help me. Will it work good as a 12.5” ranch gun for coyotes and deer? And at what ranges will it have the energy to drop coyotes and deer? Thanks
12.5" barrled 6mm ARC = 108 grain Hornady ELD-M, 200 yards,, 2077 FPS velocity and 1034 lb ft of energy. SO.. 200-250 yards should be fine for deer and coyotes with the 6mm ARC out of a short 12.5" barreled rifle. I personally dont like to go below 1000 lb ft of energy for deer so 250 would be my cut off point. B TW, I own a 12.5" and 18" barreled 6mm ARC in AR15's... fantastic intermediate cartridge rifles!
Their is still not a ton of information on these. I think it’s a good compromise for using the standard AR15 platform without having to change lowers into an AR10 and having things be much more heavy and pricey. Still worries me ammo is tough to find and expensive but all in all it looks great considering some are using this in the prs world as it is almost as good as the 6mm creed. I just would like to know how much I’m losing if I go with a 16” barrel vs the 18” (trying to build a heavier hitting battle style rifle that’s not a’ AR10)
Not much from what I gather. There is a guy with a 12.5" that is getting over 2300 fps with 106gr bullets. My guess from what I have read would be in the 2550 fps range with 108's and a 16" barrel. Add about 60-70 fps for 18".
Old question, so forgive me, but 1:7 seems to be the preferred twist for 6mm bullets over 100 grains. I'm sure you already sorted that out, but for anyone else who happens to be wondering.
Stag arms has a 20" SS barreled upper with full pic rail on top and m-lok on sides and bottom for sale @ MidwayUSA with a VG6 Gamma 65 muzzle brake. No CH or BCG and it's rear-charging. Really nice looking upper, I was impressed. I ordered the Tiger Rock CH and Aero BCG from OpticsPlanet.
but what are the ballistics of a 6mm ARC with a 12" to a 16" inch or shorter barrel out of an AR-15 without being a specializes set up. just an every day AR-15 build chambered in 6mm ARC what kind of performance can I expect everything I have seen is out of an 18" inch or longer barrel which you will not see much on a battlefield.
Hornady is attempting to get into the millitary roster for the next caliber change. They are looking for future business from the fat and juicy Gov contracts. The era of the 5.56 is coming to an end, the next best thing is gonna be bigger in caliber 4 sure. Stocking the pond here is the preemptive next step.
Can you please give us a Ballistics Chart for 12.5" gas gun . I'd really love to know the 105g BTHP Velocity and energy from muzzle to 500 yards using 12.5 6ARC
At the beginning the guy in the green shirt said that there are AR 15s in 308's.... WRONG.... I quit listening after that. Hornady really needs to get it together.
thelastjohnwayne Not completely wrong, POF is putting out .308's in the same weight class as ar-15, but their parts are proprietary, so yes to your reply in general.
He said they tested as short as 12" barrel in an AR. How far out is the round accurate with that short a barrel? That could be great for like a backpack hiking/hunting combo gun.
Accuracy isn't a function of barrel length. A quality short barrel.is just as accurate as a quality longer barrel. The only difference is velocity and the shooters ability to not use added velocity as a crutch for conditions such as wind or incorrect range estimation.
I built a 12" 6mm ARC as a pig hunting rifle. It hits like a hammer on steel and will shoot 1-1.25" groups all day at 100 yards with 108 ELD Match bullets. It really blows the 5.56 /.223 away in performance.
I can get 6.5 Grendel for 6$ a box and less for a 1000 rounds from wolf so unless they make this to yeah I'll just have to say no and for an AR you want cheep ammo to play with
Agreed. But it is kinda cool that it shares the same mag and bolt as the grendel. All we would have to do is buy a barrel or an upper without bcg and we’d have more options. Kind of like the relationship between the 5.56 and 300 BO
I don't know why anyone would want a 6mm ARC for a bolt gun. A .243 Winchester would be better, easier and cheaper. Especially if you reload. But maybe I'm missing something...
@@Modifiedmark 243 in bolt guns is frustrating at best , with so many guns having that stupid 1:10 twist ...as far as i know Ruger, Savage, and Rem. all use 1:9'ish , but Ruger is notorious for sub par accuracy, Remington and Savage actions are clunk-o-matics combined with a high bolt lift 6mm arc velocity numbers make me think 243 'lite', and with the 1:8'ish twists i'm seeing in most barrels; it sounds like a excellent all around hunter dane , the only reason i could see wanting this in a bolt gun is if your State doesn't allow hunting with semi-auto
@@swordsman3000 I have no idea what your talking about. None. Nothing jives with what I know of .243 and 30+ years of shooting them. But go ahead and carry on with your latest Myths.
Bla bla bla.. the cartridge does not loose from shortening the barrels, but it will gain from longer barrels. Sorry your customers are not dumb. I have always respected Hornady, but Marketing bullshit like this ruins reputation.
Asked what is optimal barrel length...never answered the question. Good job, Hornady.
Optimal for what purpose? It obviously works better out of a longer barrel like every bullet does. You will need to pick a barrel length that is a compromise of velocity and handling for your intended target type and engagement distance.
Kinda said it’s 18 per the original plan for military
He said 18".
Ammo velocity stated is from 24 in barrel
Bullshit answer!!!
He says they tried it from a 26 inch down to a 12 inch barrel but never once did he mention specific ballistics at any barrel lengths.
That guy should run for office.
Forealz
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
If the performance "doesn't drop off" ... why use a longer barrel? Providing some performance metrics with different barrel lengths would be useful.
That means it doesnt have a change in velocity that isnt basically linear. That does not mean that it doesn't gain velocity if you go longer, it just means there isn't a disproportionate handicap going shorter, to a point im sure.
Ex in 556, going from 12" to 9" there is a large handicap in velocity vs length, as opposed to 16->20" where there is modest and basically linear gains
I like the cartridge on paper and am a big Hornady fan. They really made the Creedmoor a great cartridge with their support. This may be the best cartridge for a standard bbl AR.
The marketing in this video lacks. One cannot simply say “it is the greatest and will make all your dreams come true” and link the same chessy little simplistic ballistics chart to all comments.
I just heard about 6ARC and it is incredible... It reminds me a lot of the 6.5 Grendal
That’s what it is. Same patent case. Basically 6 grendel
@@flynnryder7798 Really!? 👀😮
@@crusiethmaximuss yeah. pushed the shoulder back a bit to handle longer bullets and necked it down to 6mm
@@flynnryder7798 Man. I wish I was getting paid a high salary to learn about ballistics and shooting at a range... Dream career...
You didnt actually answer the question, what is optimum barrel length
Need to listen. It was designed for the military around the 18in length. They would use a 16 if that was better.
@@blckandwhtknight the reason why they used an 18in zapper barrel for the military has nothing to do with it being the best wink barrel for the AR-15 and this particular cartridge. The 18-inch barrel was part of the contract Hornady signed When developing this cartridge for the military. The military tells the manufacturer of the product what they want not what the manufacturer wants to give the military. The military picking an 18in zapper Barrel is simply because it is a bigger pain in the butt to carry a 20 or 24 in zapper rifle in country. It's the same reason the military uses the AR-10 with an 18-inch barrel it's shorter more compact easier to get in and out of vehicles whether it's a Humvee or an aircraft such as a Blackhawk. I want to know what the velocities are at the standard barrel length of 16 in 18in 20in and 24 in. Then you can decide what application you are using the rifle for and make your barrel length according to the type of work you're doing. Echo
He actually said they tested from 12''-26'' and they didn't see a real concernable difference obviously your use for this round should be the deciding factor 18" dmr to 26" long range it should be good to boot.
According to THEIR testing, a 12 inch barrel gives about 2350fps at the muzzle and goes almost linearly up to 2850 with a 28 inch barrel. 22 inches appears to be where you hit the point of diminishing returns with about 2700ish fps at the muzzle.
@@echosreloadingchamber7306 check the link. 12" is 2350. 16 hair over 2500 50 ft per 1"
glad to see some more new cartridge additions, been a while, as a reloader and p.o. ackley fan i appreciate NEW STUFF, for some of the crowd posting i apologize for their lack of study, if you have the muzzle velocity, bullet weight, coefficient you can get YOUR OWN DATA, have a nice day and thanks Hornady!
Hornady blew a golden opportunity to sell every barrel length (12"-26") they tested. That's like running the kickoff back 105yds and purposely dropping the ball at the 1yd line.
Okay you guys are giving us the same information that most AR builders already know. We know if you're going for precision rifle work the longer the barrel the higher the velocity the further the cartridge will carry at supersonic. You guys failed to tell us velocities of this cartridge at certain bullet weights out of certain Barrel lengths. If you guys are promoting a new cartridge the best way to do it is transparency give us all the information and numbers and let us make our own decision on whether this cartridge is worth its weight in gold or if it's just another 6.5 Grendel. Just some ideas for you guys not trying to break your balls just trying to figure out actual information about this cartridge which seems to be very hush-hush. Please Release the data on this cartridge and lay off of the advertising and promotion type work. We've seen a lot of new AR-15 cartridges in the past claiming to be the next Golden Child and they all seem to have fallen flat on their face either by the people who and design them and engineered them or by the actual pick up of the cartridge by the people who love modern sporting rifles like I do. Take care, and good luck with the new cartridge can't wait to actually see some factual information. Echo
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
That wasn't so hard.
link is dead :(
No answer!! Just tell us wtf the optimum barrel length is!!!
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
Hornady Manufacturing thank you very much!
I decided on a 22" Satern barrel on my AR-15 platform 6mm ARC. it is very accurate, barely any recoil, and definitely heavier than my carbine!
Did you get the ( 22″ 6mm ARC Stainless - Satern’s Liberty
Medium Contour ). ? I’m on the fence about what barrel to order and that is one I’m considering.
Thanks
As far as military usage goes, I'd like to see how the 6mm arc does with a 14.5 in barrel. The 16.5 in (and up) barrel lengths are too long for effective military use regarding close combat and weight savings for our troops.
Seeing as the 6.5 Grendel was designed with 24" barrels in mind, and its still an effective hunter out to 300 yards from a 12" barrel (effective defined as 123 gr above 1800 fps or 800 ft. Lbs with proper shot placement up to deer).
And seeing as the 6mm arc is faster and flatter, add 2 inches, I'm pretty sure it'd do great in a 14" bbl. Though I think it'd be even better in a 16".
Im guessing that at the muzzle you're still looking at around 2400-2500 fps and 1400-ish ft lbs from a 14" bbl, but YMMV.
Heaven forbid they give any useful info like velocity per inch or barrel! The link below is MUCH more helpful.
LOL. A magical barrel -- velocity isn't reduced when barrel length is shortened, but is increased when barrel is lengthened, LOL.
What is the shortest AR barrel length to remain supersonic at 1000yds...and beyond?
It's been 4 years, but I've run the numbers for you. The shortest barrel length 6 arc will stay supersonic to 1000 is 12" using the hornady A tip bullets loaded with 26 grains of varget. It does this with 2200 fps muzzle velocity and 1182 ftlbs of energy, about the same as 5.56 out of a 20" barrel. The high BC of .604 is really what carries it.
No answers! What’s in the BOX!
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
I think I may try a pinned 14.5” 6ARC. Not looking for max performance. Instead, I like to be able to match or beat my MK12 in a shorter playform.
Looks like a fantastic cartridge and I can't wait to jump on the wagon, but it doesn't outperform the 6.5 Grendel by much. My 18" Grendel pushes the Sierra 107's at 2750. Either the 6 ARC can match that velocity with the 108's out of an 18" barrel or it can't. What good is a slightly better BC if the bullet goes 100 fps slower? My guess is the two cartridges are the exact same performance.
I’m not a huge fan of this cartridge right now because of weak bolts and lack of 30 round magazines. But, you are comparing light for caliber 6.5 vs heavy for caliber 6mm. You can’t do that, to be fair and an accurate comparison you would need to compare light for light or heavy for heavy. Compare the sectional densities. From what I’ve heard, the main benefit to the 6ARC over the 6.5G is the Grendel can’t use the heavy for caliber bullets (140gr+) which have the higher BC, at a high enough velocity. The 6 ARC was designed for the heavy for caliber bullets and can use them at a high enough velocity to utilize the high BC they bring to the table. Out of long (26-28”) barrels, the 6ARC runs the same velocity (2750fps) with heavy for caliber bullets (105-108 gr) as a 6.5 CREEDMOOR with heavy for caliber (140-147 gr) bullets. For proper velocity, 6.5 is just too big for the AR-15 class of cartridges. For comparable loads, the 6ARC, 6.5Grendel, and 6.8SPC all have roughly the same muzzle energy, it’s at distance where they distance each other. It’s taken awhile to get quality information about the cartridge since release
@@andrewhenley2161 But BC grows with caliber. Heavy-for-caliber 6.5 mm bullets have greater BC than heavy-for-caliber 6 mm bullets of the same design. Hornady 6 mm 108 gr ELD match has BC of 536/270 (G1/G7), Hornady 6.5 mm 140 gr ELD match has BC of 646/326. 6.5 mm caliber overtakes the BC of 108 gr 6 mm with 130 gr bullet already. It's because mass is proportional to the cube of caliber and section is proportional to the square of caliber, so sectional density of similarly shaped bullets is proportional to the caliber.
Hornady reloading data shows 2682 fps from 24" barrel! How are you getting more velocity from significantly shorter barrel? Is that from AR15? Hornady does show both cartridges having about same velocity with same bullet weight.
@Frank Bonazza III which particular high BC Creedmoor cartridge or bullet? 140gr .264 SMK is a fatty for some reason with thicker ogive and low BC because of that, 142gr SMK of the same caliber has much higher BC.
I have a 6.5 Grendel and I'm very pleased with it but the one drawback for me is how expensive .264 caliber bullets are in what I consider its weight class of under 130 grains. I'm rather anxious to try the 6mm ARC but I don't have a big budget. The only barrels I see available right now are from some of the more high-end barrel makers. When would you estimate some of the more budget friendly manufacturers to have 6mm ARC barrels available?
Faxon is a mid tier!
Really promising cartridge. Would be nice if you could get into the numbers in these videos
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
@@hornady404 not found
The RCM should be in the military, that's a fantastic round. Sad to not see it replace a few rounds.
So no real answer he must be a politician
My question is what does this cartridge do better than the 6.5 Grendel besides producing a little bit more speed due to the fact the bullet isn't as heavy. My 20in 6.5 Grendel is still supersonic at a thousand yards. Don't really understand why all of a sudden we've gone from 308 Winchester to 6.5 Creedmoor 6.5 Grendel now we're going into the 6 millimeter this seems like a fad. Not to bust your cojones but I hope this cartridge doesn't feel like the 224 Valkyrie does.
No .224 Valkyrie love???
180 FPS is not exactly "a little bit more speed". To put it in perspective 30.06 is 150 fps faster than 308 and 300 win mag is 210 fps faster than 30.06 and there are big differences between all three. (That's comparing Hornady 178gr ELD-X on all 3) When you add 180 fps and you improve the BC at the same time it's going to make large differences downrange and it's going to do it with more energy.
I know most barrel builds use rifle length gas for 18" and above. I would like to try a 18" with mid-length gas on the 6mm ARC . My question is, is that advisable or will that hurt your bcg or hunting grouping shots?
Since he didn't answer I will. 24", final answer
SOCOM went with the 18 inch Proof Research Carbon in their Barrett Rec7's. At $920 a pop at retail for the barrel. Personally I'm looking at 20 inches.
I've got Proof Research carbon wrapped barrels in my AR10 and Accuracy International awesome barrels you're going to love it.
Kotaboy32 has a video up on RUclips of him shooting his proof research carbon fiber Barrel. The groups are not impressive at all. Not at all. And that guy can shoot. I've seen him post some pretty nice groups with his JP.
Hawaiian gunner - obviously SOCOM was concerned about weight in going with Proof. If you’re humping a full battle load up and down the mountains of Afghanistan a pound on the front of the rifle is a big deal.
@@petersouthernboy6327 hell yeah it makes a difference. I was just really hoping for better accuracy from Hornady Factory ammunition. I'm getting incredibly tired of handloading separate ammo for each one of the many many many many many many many guns I own. It gets to be a fucking pain in the ass. And trust me I could have added a lot more many's in there! Lol. I'm getting old and tired and lazy. Been reloading for so long you end up with a giant pile of crap that just ends up taking up space. And a whole bunch of boxes of ammo with Sharpie writing signifying which gun it belongs to even though they're all the same caliber. It just gets old.
So it doesn't matter? 12-26 inches, it's the same... there is no optimal barrel length for this cartridge? Nice answer.
The trick is getting a 6mm or 6.5mm round that will work well out of a 16 inch barrel and can use reliable 25 Round Magazines.
See 6.8 SPC II.
@@tofan2622 I meant 6mm that's good longer range than a 5.56. 6.8 spc is meh
@@smithnwesson990 6.8 SPC II is superior to 5.56 in every way. You must be talking like 1k yard distance.
@@tofan2622 I mean the 400-700 yard range. 6.8 spc just doesn't have the BC or velocity at that range and it's the same range where 5.56 kinda dies. 6.5 Grendel is amazing at those ranges as is 6mm ARC. Both are supersonic out to 1k or beyond.
@@smithnwesson990 Out of a 16" barrel?
This doesn't help any.
Way too vague, we deserve better from you guys. Give us the velocities from various barrel lengths.
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
About 50 ft/s per inch of barrel. 100fps change between 16" and 18".
Can we please have the data stats/graphs on set barrel lengths, with a variety of projectile weights, for the velocities, energy and bullet drop, at say; 200, 300, 400, 500, 600, 800, 1000, 1200, 1500, 1800yards?
Barrel velocity is nice, but it is also good to be able to compare data down range.
I guess I will wait for reloaders to have vids up...which can be mo the to years. Johnny's reloading bench is epic for all of the details, including powder types. Now, to see if he can get onboard this hype train.
Thank you very much for this chart. The last thing I want is an AR with a 29 or 30 inch barrel. And I have to say a lot of the videos online the groups are not looking good at all. 2 moa seems to be a standard. And that was out of several different proof research barrels. This is starting to look like a 224 Valkyrie situation
Is there a general rule if bolt gun 6arc will throw a 100 grainer faster by 100-150fps over the same barrel length gas gun? Would 20” barrel in a bolt gun come close to the Hornady stated velocity for 103gr ELDX 24” test barrel claiming 2800fps (a load still for gas guns) that I don’t really see out of gas guns at all?
I’ve ordered a 24” barrel that seems good enough to me
George Neri I too want to know
Any specifics?? This generalization doesn't give us much. What velocities were you guys getting using the 108s in 12-14 inch configurations? 18-20? 22-24? I know a few people that are worried the shorter tubes will rob velocity worse than the 6.5 grendel due to the smaller bore. Others really want this to work because a 12" 6mm gas gun would be AMAZING for a ranch/coyote gun if velocity is adequate.
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
@@hornady thanks!! That's exactly what I've been looking for.
So the chart doesn’t help me. Will it work good as a 12.5” ranch gun for coyotes and deer? And at what ranges will it have the energy to drop coyotes and deer? Thanks
It will make a GREAT ranch gun. 12.5" is about optimal for a pistol AR. Enough energy to take deer out to around 400yds. Coyote even further.
So would you still be able to plink out to a 1000 yards with 12.5” barrel on occasion
I guess Hornady wants this cartridge to go the way of the 357 maximum and the 45 Winchester magnum, don’t provide anybody with brass and keep the ammo prices ridiculously high.
hornady brass and hornady reloading data is in the clouds
So the chart doesn’t help me. Will it work good as a 12.5” ranch gun for coyotes and deer? And at what ranges will it have the energy to drop coyotes and deer? Thanks
12.5" barrled 6mm ARC = 108 grain Hornady ELD-M, 200 yards,, 2077 FPS velocity and 1034 lb ft of energy. SO.. 200-250 yards should be fine for deer and coyotes with the 6mm ARC out of a short 12.5" barreled rifle. I personally dont like to go below 1000 lb ft of energy for deer so 250 would be my cut off point. B TW, I own a 12.5" and 18" barreled 6mm ARC in AR15's... fantastic intermediate cartridge rifles!
With handloads and a 12.5" bolt gun, what kinda velocity can I expect from a 80-90gr CX? 🤓👍😎
Their is still not a ton of information on these. I think it’s a good compromise for using the standard AR15 platform without having to change lowers into an AR10 and having things be much more heavy and pricey. Still worries me ammo is tough to find and expensive but all in all it looks great considering some are using this in the prs world as it is almost as good as the 6mm creed. I just would like to know how much I’m losing if I go with a 16” barrel vs the 18” (trying to build a heavier hitting battle style rifle that’s not a’ AR10)
Not much from what I gather. There is a guy with a 12.5" that is getting over 2300 fps with 106gr bullets. My guess from what I have read would be in the 2550 fps range with 108's and a 16" barrel. Add about 60-70 fps for 18".
I found a barrel i like for my 6 MM AR build I'd 16 inches with 1-8 twist, week this trust rate stabilize the 103 grain bullets?
Old question, so forgive me, but 1:7 seems to be the preferred twist for 6mm bullets over 100 grains. I'm sure you already sorted that out, but for anyone else who happens to be wondering.
It would have been awesome if an answer would have been given.
Who is making the AR barrels for these now?. This is going to be the next rifle I build.
Sanders sells them. So do a few others like CMMGInc. I'm going with an 18-inch Sanders, personally.
Stag arms has a 20" SS barreled upper with full pic rail on top and m-lok on sides and bottom for sale @ MidwayUSA with a VG6 Gamma 65 muzzle brake. No CH or BCG and it's rear-charging. Really nice looking upper, I was impressed. I ordered the Tiger Rock CH and Aero BCG from OpticsPlanet.
What would be best twist rate for 12” AR barrel to hunt coyotes and deer with silencer. Looking for good truck gun for around the farm.
24" barrel is hard to beat
NUMBERS
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
Today on TGC News...
but what are the ballistics of a 6mm ARC with a 12" to a 16" inch or shorter barrel out of an AR-15 without being a specializes set up. just an every day AR-15 build chambered in 6mm ARC what kind of performance can I expect everything I have seen is out of an 18" inch or longer barrel which you will not see much on a battlefield.
Thoughts on .224 ARC?
Hornady is attempting to get into the millitary roster for the next caliber change. They are looking for future business from the fat and juicy Gov contracts. The era of the 5.56 is coming to an end, the next best thing is gonna be bigger in caliber 4 sure. Stocking the pond here is the preemptive next step.
Can you please give us a Ballistics Chart for 12.5" gas gun .
I'd really love to know the 105g BTHP Velocity and energy from muzzle to 500 yards using 12.5 6ARC
This is the current chart that we have. press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
Data please. No sales pitch. Just the data.
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
do you guys have an updated link for the barrel length ballistics graphic?
I'd just get 6.5grendel. The difference is minimal. And Grendel is wayy more established.
So who makes ARs and bolt guns for the 6mm ARC?
At the beginning the guy in the green shirt said that there are AR 15s in 308's.... WRONG.... I quit listening after that. Hornady really needs to get it together.
thelastjohnwayne
Not completely wrong, POF is putting out .308's in the same weight class as ar-15, but their parts are proprietary, so yes to your reply in general.
are MK12's being chambered in 6mm ARC ?
He said they tested as short as 12" barrel in an AR. How far out is the round accurate with that short a barrel? That could be great for like a backpack hiking/hunting combo gun.
Accuracy isn't a function of barrel length. A quality short barrel.is just as accurate as a quality longer barrel. The only difference is velocity and the shooters ability to not use added velocity as a crutch for conditions such as wind or incorrect range estimation.
I built a 12" 6mm ARC as a pig hunting rifle. It hits like a hammer on steel and will shoot 1-1.25" groups all day at 100 yards with 108 ELD Match bullets. It really blows the 5.56 /.223 away in performance.
What kinda mags does the 6 arc take for an AR
Cheers Mate!
How long bolt carrier can live with this cartridge?😁
Brass? Any brass? Could use some brass...please...
In regards to the velocity that is printed on your ammo what is the length of your test barrels ?
If it doesn't say just assume 24".
and 2000 Rounds later the Barrel is gone
Politician answer.
He didn't answer the question ❓
press.hornady.com/assets/pcthumbs/photos/1410997173-6mm-ARC---Velocity-vs-Barrel-Length-infographic.jpg
I can get 6.5 Grendel for 6$ a box and less for a 1000 rounds from wolf so unless they make this to yeah I'll just have to say no and for an AR you want cheep ammo to play with
Agreed. But it is kinda cool that it shares the same mag and bolt as the grendel. All we would have to do is buy a barrel or an upper without bcg and we’d have more options. Kind of like the relationship between the 5.56 and 300 BO
Thanks for giving us basically no information.
Good info! Thanks!
Another round of ammo, that you can’t find in the store or on the internet, except at high market prices ….welcome to the Ammo makers world suckers!!😂
12.5
I would like to see a 16" light weighted threaded barrel in a Bolt Gun for Hunting PA White Tails.
I don't know why anyone would want a 6mm ARC for a bolt gun. A .243 Winchester would be better, easier and cheaper. Especially if you reload. But maybe I'm missing something...
@@Modifiedmark 243 in bolt guns is frustrating at best , with so many guns having that stupid 1:10 twist ...as far as i know Ruger, Savage, and Rem. all use 1:9'ish , but Ruger is notorious for sub par accuracy, Remington and Savage actions are clunk-o-matics combined with a high bolt lift
6mm arc velocity numbers make me think 243 'lite', and with the 1:8'ish twists i'm seeing in most barrels; it sounds like a excellent all around hunter
dane , the only reason i could see wanting this in a bolt gun is if your State doesn't allow hunting with semi-auto
@@swordsman3000 I have no idea what your talking about. None. Nothing jives with what I know of .243 and 30+ years of shooting them. But go ahead and carry on with your latest Myths.
@@Modifiedmarkplease show the class where Anything i posted is not true
own opinions...not own Facts my friend
Answered question in first 44 seconds. 18" barrel for military, that means us as well.
For s**** and giggles would be pretty need to feed an pistol.
SO MANY DIFFERENT CALIBERS THESE DAYS, CAN YOU MAKE A DO IT ALL ONE. OH LET ME THINK🤔, YES WE HAVE IT, IT'S CALLED THE .308 AND THE .223!!!😉👉
You literally didn't give any numbers out on what the velocity change would be or percentage or anything... what a waste of my time.
there is a link below
Lmfao under 18" the 6.5 grendel is better technically. At 18" and up yes it does better
Pointless video but ok.
Zero help
Bla bla bla.. the cartridge does not loose from shortening the barrels, but it will gain from longer barrels. Sorry your customers are not dumb. I have always respected Hornady, but Marketing bullshit like this ruins reputation.
This was a bad video. I would expect loss per inch and actual ballistics by barrel length from ballisticians.
How worthless - said a lot of nothing.