And to think you were a land chaser when I met you. 😂 That load is gonna kick some butt John! Good job. One small edit to my method. I don’t wait until accuracy falls off to move. I often test 0.003” and 0.006” forward of my current seating depth to see if my node has moved forward. If it has, I change seating depth. Goal is to never fall out of the node.
Yeah...these guys have improved my regular hunting loads exponentially. I'm not a competitive shooter, just like good ammo tuned to my weapon system. So watching these vids have markedly improved my loads and I even wanna take down some of the ammo I have loaded already and start over!
Quick stats note: While you would expect ES to increase with an increase in sample size, that relationship is not linear, it's logarithmic. In other words, diminishing returns as you increase sample size. Regarding SD, you would actually expect SD, all things being equal, to become smaller as sample size increases. As your sample size increases, the distribution of scores aggregates more tightly around the mean. All of this, of course, is assuming a normal distribution. Given the dynamics of load data, we can safely assume a normal distribution of velocities. I'm a statistician and I'm thinking of uploading a "Stats Class for Shooters" course. Polling for interest... does that sound like something you would watch? Please respond either way.
Greetings from Germany and a happy and a healthy new year John I started longrange half a year ago. The videos from you and Erik are so informative. I have learned so much from you and at the same time avoided many mistakes. I started with .308 Blaser Tactical. Now I'm venturing into 300 WinMag. My wife surprised me at Christmas with a SAKO TRG 42. I now have work ahead of me. Sharing your experience, your posts will make the road much shorter. I learn from the best!!! Many many thanks. Kevin
Great vid and it truly inspires me to get deeper into reloading for rifle. I don't quite understand all the technical terms but through your video I can stop, look them up and thus learn a great deal. Thank you from a true newbie.
Great video John and a fantastic example of the accuracy required to perform at the top level of the sport. 1/3 to 1/4 moa elevation,, consistently. It's not bragging, it's necessary. At the 2017 WCs with with over 3500 points on the card the difference between winners and 1st losers was a whopping 5 points, 0.14% In FTR it was 3400 vs 3394, 6 points, all credit to Bryan for waiting. EVERY SINGLE POINT COUNTS.
Thank you and I appreciate what you said. It’s absolutely true. I shot a match last year where I shot a clean score of 600-34X and still wound up in 4th place. It’s a crazy discipline in that regard.
Thank you and you’re correct, seating depth has virtually zero if any effect on speed. It won’t unless you shoot some that jump and some that jam. Then you’ll see a slight variance in most cases.
Thanks so much for sharing. It‘s a great pleasure watching you work. There is a lot to learn from your procedures and the way you draw conclusions for a novice like me! Amazing insight!
Always fun watching vids like yours and Erik's but us gas gun PRS guys live in a totally different world when it comes to handloading. Magazine length is real. lol I can get single digit sd's and low teen es but there is no starting that close to the lands and grooves. (At least with a manufactured barrel from say aero precision) It's all good though. That's just a thing you accept when you decide to take the gas gun path.
Very thorough video and explanation, nice job John. Two quick comments: 1) The slightly lower velocity on day two may be due to temperature... 2) I will usually run two or three 3-shot groups for charge and seating dial in tests just to rule out human error (which never happens right?) or any component or load anomalies.
Thanks for this, really good info but more so thanks to you and eric. I am a shooting coach and a prs competitor and i love the shooting sports for the exact reason you do the videos. Simply put no secrets, everyone helps you get better. Kind of a heres how i do it now with all things being equal, now try and outshoot me one the line 😂
Exactly. I’ve been really fortunate to shoot with some really good people who have the same mentality and I think it’s like a lot of things in life. I would rather train a lot of people to be better than me then do my hardest to keep everybody beneath me. My biggest rewards are when somebody that I’ve helped out shoots me.
Very well done, awesome numbers, this is how accuracy should be chased. Extremely informative and helpful for us reloaders/hunters who want the best group to take accurate/ethical shots. Thanks for sharing, God bless
Happy Thanksgiving John and my wife is rolling her eyes at the sound of hearing your 30-shot segment coming out of my phone speaker as I watch this clip at the Thankgiving table. She's great because she knows I'll never change and she didn't kick me out yet🙄🤣. Holy Moses, those ES numbers are not what I get! I am like a sponge to this channel though and thanks for the videos from which we all learn and benefit👍
I eat this data up!!!!! I ran this same analysis yesterday, actually I’ve been running it for the past three days. I appreciate what you are doing !! Still scratching my head on the cbto’s changing on the driven loaded ammo, I think there are measuring tool and environmental issues changing my cbto’s slightly.
Back in the waggon wheel days like 40-50 years ago the general consensus was to seat the projectile until it just touched the lands so I guess there is no bullet jump. The only downside is if you are using a high power there is no margin for error and pressure can escalate quite rapidly. I know that one of the reasons Sako idiot-proof their firearms is by machining the lands deeper in the barrel so magazine length does not allow you to do this.
My brother and I are just getting into reloading, and your channel seems like a great resource! Thanks! BTW- I’m 99% certain we’re members of the same range. Hope to see you around!
Great video! One thing I found the hard way was not to trust the micrometer on the seating die because it measures from the point of the bullet and different lots have variances from point to ogive. But, I see you use both so all good.
Finished load development and the seating test. Don't own an EC Tuner but do have a Harrell's to try. Hope you post your Tuner video soon so I can try to get my .346 groups a little tighter in my 7mm08.
@@FClassJohn Thanks F-C J, that gives me a place to start. The Harrel moves up the barrel instead of adding weight forward but the concept should still apply. Will know more on Friday. Always looking forward to your next video.
In accordance with your post, I wonder how I can know for sure which way barrel wear will affect my position relative to the node. Will I be approaching the slope or moving away from it?
Mr. John, Starting off with "combustion/powder" testing, where are you seating the bullet? .009" ? Then for "seating depth" testing, begin .009" off as in this video? Just trying to figure the seating depth Starting point when performing the powder testing. Thank you sir.
See in believing, (I Think). I was surprised to see from your tests, that seating has so little effect on Velocity. I am an electronics technician with lots of familiarity with resonance. Thus I am vitally interested in factors which affect the exact position of a bullet with respect to resonance at the point of exit. I had thought that seating had a dramatic effect on pressure and thus velocity, but your tests seem to refute that premise. More thoughts later if I can find a way to make it sound sensible. Much obliged for your presentation
Yeah it’s very common to see no real velocity variance once you’re in the node. Of course there’s other factors like good brass prep that can have a big effect on velocity no matter how you’re testing so it’s important to have those pieces in place first.
Great information, I was going to ask about the remote trigger but saw the info in another comment. Thanks for all the great content, I am learning a lot! Between you and Erik, I am dialing in some good loads. Would like to hear your opinion on neck turning.
Man if there ever was a textbook video made on how to tune depth I’d say this is it. I don’t shoot as fast but hey. Find powder. Find jam. Back off. Find .009-.01 range. Maybe go .002 for .012 done. I dunno if you’ll see this comment or whatever but if you do just curious is anybody tuning in mid weather / elevation then making high and low sets of seating depths to compensate for slower faster bullet speeds? To try and keep gun run able and tuned if say you shoot in cold weather or high/hot elevation? Example is if you tune at mid temp sea level and go to higher elevation equals faster FPS or cold temp slower your still within your guns .009-.01 node.
First off, thank you for the kind words. As to your question, it’s been my experience that if you have a load that is truly tuned then it remains pretty darn stable across most ramps and elevation (although you do have to adjust you dope for elevation no matter what). I know some guys who try to load to the temp they’re going to shoot at but a lot high level guys I know simply dial a load and take it to a match. Of course that’s why some use tuners too, as an emergency tool.
@@FClassJohn right with a tuner I suppose you wouldn’t need to go to one end or the other of a range just rebalance on the fly. Just was curious if that was still a thing I guess. Used to find 9-10 then if I was close to home stick to middle but if shot in colder I’d know timing would be slower so I move to longest of range depth to try and stay in timing. Or hotter shorter etc. seems I got caught less with my pants down if you will. Love the content, interesting to see all the new turners gadgets etc. especially tuners. Great idea. Vibration tuning on the fly. Those are fantastic 👍🏻👍🏻
Oh boy, the cleaning question 😱 Sooooooo I don't clean nearly as often as you would think. In fact I've only cleaned this barrel once around 30rds in so far and it's got over 200 rds on it.
My Model 70 hunting rifle that I bought 40 years ago was interesting. I scoped it for giggles when I got my borescope only to find 40 years of copper choking the bore. I did a video on the barrel and cleaning since this barrel had never seen copper solvent. I got a lot of flak from folks telling me how I had ruined the accuracy or wasted my time. Never mind this barrel was so choked it was causing accuracy issues and needed the copper cleaned out. My competition pistols get cleaned about every 1K rounds (a match weekend and practice).
Fairly new to reloading and I do follow Eric’s videos but what I’m not understanding is the powder charge node. All I’ve done so far is chrono at jam minus 20 So if I want a round going let’s say 3000fps load for that speed at jam -20 then do seating depth test to tune it for accuracy. I’ve had great success with one load but I think I might just be lucky
Thanks for the vid. Getting good info. One thing I see a lot and hate seeing is a lack of admission on the human factor. For example, you said “I take the data as data”. I’ve seen very low level shooters make assumptions about nodes based on three shot groups. They do 40.0, 40.3, and 40.6 gr (plus a lot more of course) and those three groups are 1.2, .264, .900. They assume the .264 is the node. No, if you’re groups look like that you got lucky on that group. Either you can’t shoot or your gun isn’t good enough. But the point is they assume everything is perfect snd therefore the data is pure. Obviously you’re experienced and are an accomplished shooter with high quality equipment. But on that group that wasn’t touching, is it possible the shooter cause the issue? I’m very humble and always try to call where I was aimed when the shot broke. At sub 1/4 that might be harder (I don’t shoot f class) but maybe that open group was actually your best consistency to mean the bullet hit exactly where you aimed each time and you put the 1/4” into the group. Great job regardless and I’m always a student. But my suggestion isn’t to round off the edges for bragging, but also don’t assume the data is 100% representative of the variable you’re changing. Mathematically we like to think everything is constant but seating depth but in reality it’s not. On a side note, I bought a neck sizing die and was planning on using it until I watched Eric’s vid about all the f class guys fl sizing. Guess it’ll stay in the box.
Thank you and you’re correct. There’s always a time to trust the target and a time to know you may have Influenced it. Shoot enough and you’ll know the difference. That’s also why we test and test and test to replicate results. You can rarely take a single result and trust it.
Almost speechless, the information you presented and the way you presented it is exceptional. I have been doing similar development with powder charges for a few years, but never thought to do it with jump (and I have no idea why). The idea of staying a the front of the bracket makes total sense. I do have one question. Your sweet spot is at the very back of your test range so why would you not keep going to find out just how long that sweet spot might be?
Thank you for the kind words. As for the sweet spot, I could keep going but I’ve never really found much use in doing that and it can lead to a lot of waste barrel life and components. Sometimes less is more.
I always try to have a clean barrel, then run a couple fouling shots before starting. I don't focus on area heat as much as I used to but in a perfect world I just want the barrel to be in the same state as it would be during my matches.
Be careful of getting too close to the lands if you are going for velocity closer to lands equals higher pressure. Look at Roy Weatherby’s data, he loaded max powder and had the bullets .02 to .03 off the lands in order to reduce pressures, new bullet design negate seating depth issues. How close are your loads to max powder?
Assuming you have a good idea of where tuner will be set, do you crank tuner all the way in to do the jump test, or keep it close to last known good setting?
Your editing of the test shots made me chuckle, gun going off with the bolt open and no hand on the trigger, couple of doubles even.. Nicely explained process, decent looking results too.
G'day John , was your powder 4350 or N 150 . I. In Australia and trying a few . We don't have powders you guy's have. Am I close? . All you guys put up is invaluable. Keep it up . Cheers 🍻 👏
Does seating depth still make a difference if you are shooting something like an AR where maybe it’s not possible to get the bullet close to the lands? Say for example your mag length is 2.26 and the bullet doesn’t touch the lands until you have a 2.35 OAL.
Eric says: "chasing the lands is stupid". Well, it appears that you documented a 27 thou range where the load you developed performs best. As barrel erosion is linear, I think you may accurately predict where the "jump" will exceed your 27 thou baseline. OLD TIMERS used to maintain the jump and modify the charge until two grains of powder would no longer maintain the target velocity.Yep, the OAL got longer.
Nice videos and thank you for the time you put in this. Question: you mentioned that you have a problem with the vertical strings but not with the horizontal... why is that?
@@justice1327 i guess it’s a little conditional. If your horizontal matches the vertical then it’s still a bad load but when the vertical is a fraction of he horizontal then I can often feel comfortable that it’s conditions and same this with vertical being the load when the vertical is excessive compared to the horizontal. Does that make sense?
And to think you were a land chaser when I met you. 😂
That load is gonna kick some butt John! Good job.
One small edit to my method. I don’t wait until accuracy falls off to move. I often test 0.003” and 0.006” forward of my current seating depth to see if my node has moved forward. If it has, I change seating depth. Goal is to never fall out of the node.
Thanks Erik and I always appreciate the help and constructive criticism, it’s how I (we) get better.
How many people think that Elon Musk has some alein space ship in a hugh airplane hanger he is trying to reverse enigineer
You and Eric have the most useful and informative videos for rifle accuracy and precision by a huge margin. Thanks
Thank you, I appreciate that.
I like that what they say makes sense.
+1 to that bro you and Eric have been my guide for getting into precision reloading
Yeah...these guys have improved my regular hunting loads exponentially. I'm not a competitive shooter, just like good ammo tuned to my weapon system. So watching these vids have markedly improved my loads and I even wanna take down some of the ammo I have loaded already and start over!
The info you put out is straight up class room material!! Great info!
Thank you and glad it helps.
Between you and Eric C I learn something new every video! Thank you.
Glad it helps!
I never comment but this was a great video, really appreciate the explanation about how you bracketed the jump and why you chose the closest.
Thank you. I’m appreciate the kind words.
Absolutely love the fact that he's a Lefty shooting Righty..
The velocity consistency is incredible.
Dang those ES and SD would be awesome in a 5 round group. 30 rounds that's some serious consistency and skills. Nice job.
Thank you.
Amen!
Exact...ly, pardon the pun.
Quick stats note: While you would expect ES to increase with an increase in sample size, that relationship is not linear, it's logarithmic. In other words, diminishing returns as you increase sample size. Regarding SD, you would actually expect SD, all things being equal, to become smaller as sample size increases. As your sample size increases, the distribution of scores aggregates more tightly around the mean.
All of this, of course, is assuming a normal distribution. Given the dynamics of load data, we can safely assume a normal distribution of velocities.
I'm a statistician and I'm thinking of uploading a "Stats Class for Shooters" course. Polling for interest... does that sound like something you would watch? Please respond either way.
Sounds Well above my little brain but I'm definitely game to learn more on the topic
Greetings from Germany and a happy and a healthy new year John
I started longrange half a year ago. The videos from you and Erik are so informative. I have learned so much from you and at the same time avoided many mistakes.
I started with .308 Blaser Tactical. Now I'm venturing into 300 WinMag. My wife surprised me at Christmas with a SAKO TRG 42. I now have work ahead of me.
Sharing your experience, your posts will make the road much shorter.
I learn from the best!!!
Many many thanks.
Kevin
Thank you and I really appreciate the kind words.
Great vid and it truly inspires me to get deeper into reloading for rifle. I don't quite understand all the technical terms but through your video I can stop, look them up and thus learn a great deal. Thank you from a true newbie.
I have heard this many times, but it just never fully made sense. I now am confident that I can make this work for me, Thanks.
Great video John, super consistent velocity spreads with groups to match the results excellent work ...nice..👍👍
Thank you.
Thank you . You always make great videos!!!
Thank you for the kind words.
Great video John and a fantastic example of the accuracy required to perform at the top level of the sport. 1/3 to 1/4 moa elevation,, consistently. It's not bragging, it's necessary. At the 2017 WCs with with over 3500 points on the card the difference between winners and 1st losers was a whopping 5 points, 0.14%
In FTR it was 3400 vs 3394, 6 points, all credit to Bryan for waiting.
EVERY SINGLE POINT COUNTS.
Thank you and I appreciate what you said. It’s absolutely true. I shot a match last year where I shot a clean score of 600-34X and still wound up in 4th place. It’s a crazy discipline in that regard.
Hello, congratulations on your great result. Thank you for the good lesson and best regards from Poland
Thank you and I’m glad you enjoyed it.
You explain everything in simple turns. Everyone’s brains work a little bit different. Excellent stuff! You are going to cost me a lot of money!!
Thank you for the kind words and I'm glad my videos help you.
Great no-nonsense method. Also cool to see how seating depth had minimal to no effect on velocity and SD.
Thank you and you’re correct, seating depth has virtually zero if any effect on speed. It won’t unless you shoot some that jump and some that jam. Then you’ll see a slight variance in most cases.
This is a wonderful video - understandable and actual data. Thank you.
Thank you
Thanks so much for sharing. It‘s a great pleasure watching you work. There is a lot to learn from your procedures and the way you draw conclusions for a novice like me! Amazing insight!
Thank you and glad it helps!
Enjoying the show and can't wait for the tuner show.
Good information
Thank you and I'm working it on it now. Waiting to shoot a final 600yd target on Tuesday and then I'll post it.
I love your teaching explanations!
Thank you
Wery informative video. Amazing es numbers. Thanks for sharing great professional tips.
My pleasure and glad it helps.
Jesus those are some consistent velocities !
Thank you.
Awesome video enjoyed every second of it, thanks for all the advice and thanks for all the information. Priceless .🇺🇸
Always fun watching vids like yours and Erik's but us gas gun PRS guys live in a totally different world when it comes to handloading. Magazine length is real. lol I can get single digit sd's and low teen es but there is no starting that close to the lands and grooves. (At least with a manufactured barrel from say aero precision) It's all good though. That's just a thing you accept when you decide to take the gas gun path.
I am wowed by your velocity numbers! Wow! I've never attained that kind of consistency. I will tho. 👍 Great video, again. 🙂
Es unbelievable 👍👍
It would be interesting to repeat this exact test and compare
Very thorough video and explanation, nice job John. Two quick comments: 1) The slightly lower velocity on day two may be due to temperature... 2) I will usually run two or three 3-shot groups for charge and seating dial in tests just to rule out human error (which never happens right?) or any component or load anomalies.
So well explained, thank you Sir!
Thanks for this, really good info but more so thanks to you and eric. I am a shooting coach and a prs competitor and i love the shooting sports for the exact reason you do the videos. Simply put no secrets, everyone helps you get better. Kind of a heres how i do it now with all things being equal, now try and outshoot me one the line 😂
Exactly. I’ve been really fortunate to shoot with some really good people who have the same mentality and I think it’s like a lot of things in life. I would rather train a lot of people to be better than me then do my hardest to keep everybody beneath me. My biggest rewards are when somebody that I’ve helped out shoots me.
She is right on what the people want
Very well done, awesome numbers, this is how accuracy should be chased. Extremely informative and helpful for us reloaders/hunters who want the best group to take accurate/ethical shots. Thanks for sharing, God bless
Thank you.
Jam Secant and jump Tangent, 20 thou off great place to start for jump, works just about every time
Thank you.
Perfect explanation!!
Happy Thanksgiving John and my wife is rolling her eyes at the sound of hearing your 30-shot segment coming out of my phone speaker as I watch this clip at the Thankgiving table. She's great because she knows I'll never change and she didn't kick me out yet🙄🤣. Holy Moses, those ES numbers are not what I get! I am like a sponge to this channel though and thanks for the videos from which we all learn and benefit👍
Thank you for the kind words Jeff and Happy Thanksgiving
I eat this data up!!!!! I ran this same analysis yesterday, actually I’ve been running it for the past three days. I appreciate what you are doing !! Still scratching my head on the cbto’s changing on the driven loaded ammo, I think there are measuring tool and environmental issues changing my cbto’s slightly.
Thank you and glad you enjoy the material.
@@FClassJohn Erik cirtinia was my first patreon and I’ll be one of yours as well if you go that route.
@@wvlongshooter3912 thank you. I’m working towards that.
Enjoyed the video! You did a really good job explaining!
Looks great to me. Thanks for the info.
Glad it was helpful
Back in the waggon wheel days like 40-50 years ago the general consensus was to seat the projectile until it just touched the lands so I guess there is no bullet jump. The only downside is if you are using a high power there is no margin for error and pressure can escalate quite rapidly. I know that one of the reasons Sako idiot-proof their firearms is by machining the lands deeper in the barrel so magazine length does not allow you to do this.
Very informative. Great job.
Thank you
That SD is amazing!
Thank you.
Amazing video, this is gold to a noob. Thank you
My pleasure. I’m glad it helps.
Great stuff! Thank you.
Thank you.
Nice clean score can’t ask for more
Thank you
Geeking out here .... good content
It’s going rise up as the velocity increases it’s flattening the trajectory curve
Great job explaining
Glad it helped.
My brother and I are just getting into reloading, and your channel seems like a great resource! Thanks!
BTW- I’m 99% certain we’re members of the same range. Hope to see you around!
Thank you for the kind words and hope to see you around.
@@FClassJohn Question: Where is the range you are shooting at located. Address Please.... Thank you
Gotta love a 3 holer.
Threeeee Ooooh it's a magic number, yeah it is, it's a magic number.
Do you Always shoot that slow. Haha. Great video my man. Thanks
Do you have also the powder charge test video?
Great explanation!!
Thank you.
Do you have a video on your powder test or do you just pick a charge, go up incrementally and look for a node, similar to this? Thanks!
Excellent!!
Thank you.
Great video! One thing I found the hard way was not to trust the micrometer on the seating die because it measures from the point of the bullet and different lots have variances from point to ogive. But, I see you use both so all good.
Thank you
Thanks John! Have you filmed a video all about "Node"?
Great video, thanks!
Thank you
Great video. Thank You🇸🇪
Glad it helped.
Finished load development and the seating test.
Don't own an EC Tuner but do have a Harrell's to try. Hope you post your Tuner video soon so I can try to get my .346 groups a little tighter in my 7mm08.
I'll try to get one done this week but here's my last video on the tuner. ruclips.net/video/7kWNe5tOBek/видео.html
@@FClassJohn Thanks F-C J, that gives me a place to start. The Harrel moves up the barrel instead of adding weight forward but the concept should still apply. Will know more on Friday.
Always looking forward to your next video.
I would pick the depth in the middle just to make sure I stay in the accuracy node if I have slight fluctuation in seating depth accuracy
In accordance with your post, I wonder how I can know for sure which way barrel wear will affect my position relative to the node. Will I be approaching the slope or moving away from it?
Excellent video
Thank you
Thank you for the very informative video. I might be blind, but I didn't see what type of powder you were using. Cheers
interesting. thanks
Awesome
Mr. John, Starting off with "combustion/powder" testing, where are you seating the bullet? .009" ? Then for "seating depth" testing, begin .009" off as in this video? Just trying to figure the seating depth Starting point when performing the powder testing. Thank you sir.
Great video!
Thank you.
Sick ES!
You shoot faster with your bolt action than I do with my semi auto
Just reached the end of your bench shooting. Found out you were fast forwarding.
Are you going to post a video of the tuner test? Would be interesting in seeing the next step. Thanks for sharing!
Here ya go. ruclips.net/video/7kWNe5tOBek/видео.html
All those groups are acceptable! That rifle rest allows for consistency I'm sure!
Thank you and yeah, it’s a great front rest and is definitely a great tool.
That barrel should be smoking hot by now!
See in believing, (I Think). I was surprised to see from your tests, that seating has so little effect on Velocity. I am an electronics technician with lots of familiarity with resonance. Thus I am vitally interested in factors which affect the exact position of a bullet with respect to resonance at the point of exit. I had thought that seating had a dramatic effect on pressure and thus velocity, but your tests seem to refute that premise. More thoughts later if I can find a way to make it sound sensible. Much obliged for your presentation
Yeah it’s very common to see no real velocity variance once you’re in the node. Of course there’s other factors like good brass prep that can have a big effect on velocity no matter how you’re testing so it’s important to have those pieces in place first.
Interesting. I have always loaded for minimum jump. I always thought excessive jump was bad...
Great information, I was going to ask about the remote trigger but saw the info in another comment. Thanks for all the great content, I am learning a lot! Between you and Erik, I am dialing in some good loads. Would like to hear your opinion on neck turning.
jklprecision.com/product/labradar-trigger/
Man if there ever was a textbook video made on how to tune depth I’d say this is it. I don’t shoot as fast but hey. Find powder. Find jam. Back off. Find .009-.01 range. Maybe go .002 for .012 done. I dunno if you’ll see this comment or whatever but if you do just curious is anybody tuning in mid weather / elevation then making high and low sets of seating depths to compensate for slower faster bullet speeds? To try and keep gun run able and tuned if say you shoot in cold weather or high/hot elevation? Example is if you tune at mid temp sea level and go to higher elevation equals faster FPS or cold temp slower your still within your guns .009-.01 node.
First off, thank you for the kind words. As to your question, it’s been my experience that if you have a load that is truly tuned then it remains pretty darn stable across most ramps and elevation (although you do have to adjust you dope for elevation no matter what). I know some guys who try to load to the temp they’re going to shoot at but a lot high level guys I know simply dial a load and take it to a match. Of course that’s why some use tuners too, as an emergency tool.
@@FClassJohn right with a tuner I suppose you wouldn’t need to go to one end or the other of a range just rebalance on the fly. Just was curious if that was still a thing I guess. Used to find 9-10 then if I was close to home stick to middle but if shot in colder I’d know timing would be slower so I move to longest of range depth to try and stay in timing. Or hotter shorter etc. seems I got caught less with my pants down if you will. Love the content, interesting to see all the new turners gadgets etc. especially tuners. Great idea. Vibration tuning on the fly. Those are fantastic 👍🏻👍🏻
Excellent as always John. I didn't see this being answered yet, maybe I missed it. Are you cleaning between every session? Thanks, keep it up!
Oh boy, the cleaning question 😱
Sooooooo I don't clean nearly as often as you would think. In fact I've only cleaned this barrel once around 30rds in so far and it's got over 200 rds on it.
My Model 70 hunting rifle that I bought 40 years ago was interesting. I scoped it for giggles when I got my borescope only to find 40 years of copper choking the bore. I did a video on the barrel and cleaning since this barrel had never seen copper solvent. I got a lot of flak from folks telling me how I had ruined the accuracy or wasted my time. Never mind this barrel was so choked it was causing accuracy issues and needed the copper cleaned out. My competition pistols get cleaned about every 1K rounds (a match weekend and practice).
Fairly new to reloading and I do follow Eric’s videos but what I’m not understanding is the powder charge node.
All I’ve done so far is chrono at jam minus 20
So if I want a round going let’s say 3000fps load for that speed at jam -20 then do seating depth test to tune it for accuracy.
I’ve had great success with one load but I think I might just be lucky
@rpr6.5 creedmoor but what bullet seating height do you test your power at ?
@rpr6.5 creedmoor ok I understand now thank you
very useful information. I learned a lot. What is the machanical rest you are using?
This is an older video and at the time I was using a Seb Mini. I am now using a Seb NEO X.
Thanks for the vid. Getting good info. One thing I see a lot and hate seeing is a lack of admission on the human factor. For example, you said “I take the data as data”. I’ve seen very low level shooters make assumptions about nodes based on three shot groups. They do 40.0, 40.3, and 40.6 gr (plus a lot more of course) and those three groups are 1.2, .264, .900. They assume the .264 is the node. No, if you’re groups look like that you got lucky on that group. Either you can’t shoot or your gun isn’t good enough. But the point is they assume everything is perfect snd therefore the data is pure.
Obviously you’re experienced and are an accomplished shooter with high quality equipment. But on that group that wasn’t touching, is it possible the shooter cause the issue? I’m very humble and always try to call where I was aimed when the shot broke. At sub 1/4 that might be harder (I don’t shoot f class) but maybe that open group was actually your best consistency to mean the bullet hit exactly where you aimed each time and you put the 1/4” into the group.
Great job regardless and I’m always a student. But my suggestion isn’t to round off the edges for bragging, but also don’t assume the data is 100% representative of the variable you’re changing. Mathematically we like to think everything is constant but seating depth but in reality it’s not.
On a side note, I bought a neck sizing die and was planning on using it until I watched Eric’s vid about all the f class guys fl sizing. Guess it’ll stay in the box.
Thank you and you’re correct. There’s always a time to trust the target and a time to know you may have Influenced it. Shoot enough and you’ll know the difference. That’s also why we test and test and test to replicate results. You can rarely take a single result and trust it.
Almost speechless, the information you presented and the way you presented it is exceptional. I have been doing similar development with powder charges for a few years, but never thought to do it with jump (and I have no idea why). The idea of staying a the front of the bracket makes total sense. I do have one question. Your sweet spot is at the very back of your test range so why would you not keep going to find out just how long that sweet spot might be?
Thank you for the kind words. As for the sweet spot, I could keep going but I’ve never really found much use in doing that and it can lead to a lot of waste barrel life and components. Sometimes less is more.
Hi John. Thanks for this informative video. I was curious how or if you consider barrel fouling and barrel heat in your testing.
I always try to have a clean barrel, then run a couple fouling shots before starting. I don't focus on area heat as much as I used to but in a perfect world I just want the barrel to be in the same state as it would be during my matches.
@@FClassJohn Great answer, thank you.
Be careful of getting too close to the lands if you are going for velocity closer to lands equals higher pressure. Look at Roy Weatherby’s data, he loaded max powder and had the bullets .02 to .03 off the lands in order to reduce pressures, new bullet design negate seating depth issues. How close are your loads to max powder?
How far away from the lands from the ogive do you seat the bullet when doing the powder charge testing?
Awesome video always look forward to watching and learning, keep them coming. Have have you thought about doing some prs?
Thank you. I’ve shot PRS once but didn’t have the best setup for it. Maybe someday I’ll go back and give it another run.
What trigger are you using for the labradar?
jklprecision.com/product/labradar-trigger/
Here ya go
Hi John, what powder are you using and your 2.50 starting what are you measuring to?
Assuming you have a good idea of where tuner will be set, do you crank tuner all the way in to do the jump test, or keep it close to last known good setting?
Your editing of the test shots made me chuckle, gun going off with the bolt open and no hand on the trigger, couple of doubles even.. Nicely explained process, decent looking results too.
No, those shots are another guy on the range.
Quick side note/tip....instead of making a note directly on your plastic with a sharpie, use a piece of masking tape.
That's a good tip and there's certainly several ways to do it., I just don't like wasting tape and the Sharpie comes right off anyway.
G'day John , was your powder 4350 or N 150 . I. In Australia and trying a few . We don't have powders you guy's have. Am I close? . All you guys put up is invaluable. Keep it up . Cheers 🍻 👏
Thank you. I believe in this test I was using Reloder 16 but now I am using H4350.
Does seating depth still make a difference if you are shooting something like an AR where maybe it’s not possible to get the bullet close to the lands? Say for example your mag length is 2.26 and the bullet doesn’t touch the lands until you have a 2.35 OAL.
Eric says: "chasing the lands is stupid". Well, it appears that you documented a 27 thou range where the load you developed performs best. As barrel erosion is linear, I think you may accurately predict where the "jump" will exceed your 27 thou baseline. OLD TIMERS used to maintain the jump and modify the charge until two grains of powder would no longer maintain the target velocity.Yep, the OAL got longer.
XLNT info, Thanks for posting.
Who makes that Vise/Bipod that you are using??
Thanks again
Thank you. Here’s the rest therodzilla.com/product/t-rex-front-rest/
How did you get the Labradar app to work for you? Mine won't work no matter what device I try to use it with.
Where did you get your shooting stand ?
Was there a powder test vid? I searched but didn’t see it.
What seating depth did you use to find the powder node?
Great video. Did I miss the combustion video?
No you didn't miss it, I've never done one. Perhaps I'll do one in the future. Thank you for the idea.
Nice videos and thank you for the time you put in this. Question: you mentioned that you have a problem with the vertical strings but not with the horizontal... why is that?
Because for the most part vertical indicates an issue with the load while horizontal is condition. I can adjust for condition but not for a bad load.
@@FClassJohn Thank you. So a bad load can give you a vertical spread, but rarely a horizontal spread.
@@justice1327 i guess it’s a little conditional. If your horizontal matches the vertical then it’s still a bad load but when the vertical is a fraction of he horizontal then I can often feel comfortable that it’s conditions and same this with vertical being the load when the vertical is excessive compared to the horizontal. Does that make sense?
@@FClassJohn Perfect! I have just started verifying my 6mm Comp Match load data at 300yds and 600yds. I am better informed now, thank you.