Dang Erik, Lou was about to tell us his steps in load tuning and you interrupted and never let him finish. I appreciate your content. Please keep up the good work.
I can't believe how helpful these tips really are. I used Cortina's method for seating depth for a bone stock rem 700 ADL that never could shoot less than 1.5 moa and was easily able to make it submoa. The methods work.
What a service to precision shooters! Loading “secrets “ that could take a lifetime of stumbling around burning jugs of powder and cases of bullets to maybe find, in only a few videos. I was introduced to the science of precision shooting by a chance meeting of a guy who was amazed at my understanding of his passion of seeking one hole groups. He gave me a stack of benchrest magazines and the rabbit hole was opened. Things have changed in the 25ishy years that work interrupted, and now that I have time this kind of resources have cropped up. Too bad supplies are so hard to find, and if you can, so outlandish in price. But the information that you have placed is so valuable that I am clearing off the loading area to start again! Thanks to the both of you for sharing.
What I was taught at the school of firearms technology is that seating depth is critical of start pressures. For those who have been reloading for a while, its a no-brainer. On that note, consistency is the key...another no-brainer. In theory, .001" will change start pressures. How do you measure it is the next question. With so many other variables, the significant of this may be water under the bridge. As reloaders, we have made big strides in this avenue. Love it! It truly is science! Love your videos Erik!
Erik please keep making more interviews with Lou Murdica! This is super helpful stuff and we need more ov it! Please continue and make them longer with even more info :)))
Erik all your videos "kick ass"! But these interviews with competitors like yourself are next level, thank you for sharing your time and experience with us!
Hello Erik. I think that your method for using the barrel tuner is the best. I've been using barrel tuners during many years in rimfire benchrest competitions, and even if it's a bit different (with rimfire you use it to do all your ammo tuning research), I recognize many things that you explained before (tuning window with often the best grouping at both ends, and average grouping in the middle of it). This video format is so interesting, keep on going please !
Interesting Lou mentioned the 215 Berger; below .75 m.o.a. at 850 yards with my 1,000 yard National Match rifle, a hybrid with traditional 40X prone stock, customized surplus 98K action with Timney single stage match trigger, 28 inch Douglas XX, 1:10 twist, air gauged bull barrel, bedded and pillared with Redfield match peep sites (when required for iron site events) and a Vortex 'Diamondback' first focal plain scope (not a long range target scope in the opinion of most competitors) but outstanding quality and precision for as little as $280.00. Chambered in 300 Winchester Magnum.
Hi Erik, thanks so much for the great videos!! Really great to have someone with your knowledge be so willing to share. Going to be getting back into shooting after some time off. Your videos have given me a plan of action and have reignited my passion for the sport. Richard, South Africa
Hey Erik. You mentioned lots of people missing Tula primers. It’s my understanding that Murom primers are the same primer as what the Tula primers were. I have been seeing them available online. The Tula and Wolf primers were VERY good.
I always have a barrel stub made for each reamer. With fresh barrels or if you move chamber ahead after throat erosion. Very easy to seat bullet just kissing the lands. Size brass seat bullet move seating depth till you can spin brass in barrel stub making faint halo on bullet. Been doing this shooting benchrest match's for years makes load development fast. Keep them small 👍
Thanks Erik and Mr Murdica on the Lands..to Jump or Not Jump. I'd come up with more consistent shooting by being into the l and with a faint mark.That really solidified my findings by so.eone that knows much much more than me. I've leaned alot from your videos Erik.
As other have said. I'm applying all this info to stock rifles and achieving SUB-MOA. Keep the info flowing Sir. I see a custom rifle coming my way in the near future. Thank You.
@10:20 mark, you started going into the large bullets jumps. Per Lou, he has never tested beyond .030". There was an article published on the precision rifle blog that talked about this specifically (jumps >.030 or .050). Per my understanding of this theory, it seems like it would not work for BR or F-Class but would work just fine for PRS since use PRS shooters are not going for the 1 hole groups necessarily. I am very curious to hear your opinion on this, with you being what I would consider an expert in this field. Thank you so much for the content! Your channel is my go to for all things reloading and precision shooting related.
Another learning experience as Dad used to say. Two things caught my attention. Fist the effect different primers have on burn rate. Second, you both mention firing pins, and spring, I’m assuming that is to decrease lock time. Guess I’ll need to do more research on these 2 issues. I remember hearing many years ago that at the time the Remington Model 788 had the fastest lock time of factory rifles. Do manufacturers publish this info for their rifles or is there a way to determine it yourself. Keep these videos coming Erik!
Primer costs. Wow, I still remember loading 38 Special pistol with bullets I cast myself and paying 3/4 cent for a primer and 1/4 cent for the Bullseye powder charge. A penny a shot plus my time finding cheap or often free lead and casting/lubrasizing the bullets.
Great stuff Erik, I have a really particular question for you, and you seem to have just touched on it in this. How transferable is load specs between two “identical spec” barrels. The reason I ask is if I go out and buy 2 barrels and shoot the absolute hell out of it getting experimental in every variable, once it’s retireable, if I then swap out for the new one (disregard burn in) and obviously there’s going to be a difference with the throat and how the lands have moved. How useable is my data? Am I 90% there and just dialling it back in? Do the spacing of the nodes hold the same relationship? Essentially can I sacrifice an “identical barrel” exploring the configuration space to find other local minima that I wouldn’t have found by gradient descent alone because ‘I was saving the barrel life’ and not trying loads miles away from where I am, even though there might be a very forgiving and wide node I would never find otherwise.
My question is, How do you pick the best bullet for your gun? Do you test several bullets, or just start with the one that you want and figure out the load? Same question for powders. I hate buying components that I won't end up using.
There are shooting disciplines where if your load can’t handle a big jump, you have no chance of competing. Single feed vs mag feed is really a different development challenge.
Erik, when you guys work on seating depth after you find a powder charge that works, which way do you go with seating depth off 20 thousandths? .003 up or down or both?
Stop bein' so hard on yourself Captain Cortina. People gonna hate what they don't really understand. I have learned this the hard way until I got into long-range shooting. That is primarily due to not having access to professional level athletes and coaches. I was always into sports that were cutting edge in the states. I promise you this; it isn't just shooting where people beat up on each other in the InterGoogles. I have seen some very heated (and been in a few online and in-person heated debates) on other sports. Having these long-range and highly knowledgeable super marksmen on here helps immensely. If you were selling snake oil, you would have a million followers for about a month, then once they figured out it was all BS they'd drop off. I see a lot of the same folks on here time after time. I continuously find myself sending new shooters with questions to you, Gavintoob, Winning in the Wind, F-Class John (I wonder if he knows this sounds like a prostitution frequenter?), and several others. It's always gonna be controversial in LR shooting, because of the number of variables and shooting disciplines. I am often told .284 is the only way to go in F-Class. I don't doubt that, but if I suddenly switch over to .284, then what am I going to lean about wind calls by changing over to a bullet that has a full 0.1 to 0.2 higher BC than the bullet I am currently shooting. I will still argue the guy shooting .223 or .308 and outshoots someone with a .284 is hands down the better marksman. This is due to the fact they're calling wind/thermal walls, etc much better than the .284 shooter (providing they're running similar equipment. Just keep doin what you're doing, because we're still listening to what you have to say. Keep asking these legends questions in a way which espouses a desire to learn. That shows us that while you know a whole lot, you're not afraid to learn more or verify your opinion is backed up by evidence. Lou is super data driven and I love that he is so easy to learn from and down to earth. I have found that is the majority of long-range shooters and the antithesis of the 3-gunners (bunch of tacticool peacocks they are!!) Drive on Captain. Keep our bearing straight and true.
Erik here is my question I have learned everything I know from your videos and I have worked up some load's that people don't believe when I tell them however I'm just learning you guys don't jump far I get my powder charge then I start just off jam and 10 ish guns none have shot good from jam to 30,000 off and my best shooting gun shot 3/4 to 1.25 moa until 76,000 off jam then a 6,000 wide node that shoots 180,000 at 100 and 1"3/8 at 800 so why would your guns shoot close to jam but none of mine what is different? I wish my loads were within 30,000 load development would be alot quicker lol I do use the yellow boxes also
So for alot of the normal guys. I think the 100thou jumpers is usually because of mag length. I think for 20thou of free mag length I'm about 80 thou from jam. I wish aics mags could load longer.
What's wrong do you know what a tuner really does? I've seen people on TH-cam with your tuner and the groups I see that they've shot and it looks like your tuner doesn't work very well. When the tuner is the correct "weight" and at the correct setting groups go to one hole. Either the people using them don't know what they're doing or your "tuner" isn't the correct weight. So please explain what your tuner does
He said it's coming back in his live feed the other day (You crashed my web site.). The #1 thing he is working on is EC Tuners @ $240-250/ @ XX??/day and paying for his lathe('s).
He is talking about when you chamber a round and then eject it the bullet will have a tiny mark from the lands of the rifling of the barrel. Meaning the barrel will leave a tiny impression on a bullet chambered.
@@ErikCortina well "jumping " lowers the pressure curve until the primary spike caused by hitting the lands .. not the opposite. Being off the lands lower the pressure quite drastically. Like from being at the lands(near ) to let’s say 0.100" of that pt their is always a velocity drop. Like for me in multiple instance I’ve seen loss of up to 140 ish FPS going from close to the lands to 0.125 " ( for the same powder charge ). Also it’s quite simple to visualize this with my pressure trace.
Dang Erik, Lou was about to tell us his steps in load tuning and you interrupted and never let him finish. I appreciate your content. Please keep up the good work.
I can't believe how helpful these tips really are. I used Cortina's method for seating depth for a bone stock rem 700 ADL that never could shoot less than 1.5 moa and was easily able to make it submoa. The methods work.
What a service to precision shooters! Loading “secrets “ that could take a lifetime of stumbling around burning jugs of powder and cases of bullets to maybe find, in only a few videos. I was introduced to the science of precision shooting by a chance meeting of a guy who was amazed at my understanding of his passion of seeking one hole groups. He gave me a stack of benchrest magazines and the rabbit hole was opened. Things have changed in the 25ishy years that work interrupted, and now that I have time this kind of resources have cropped up. Too bad supplies are so hard to find, and if you can, so outlandish in price. But the information that you have placed is so valuable that I am clearing off the loading area to start again! Thanks to the both of you for sharing.
I really enjoy hearing these two talk about things I’m not that versed in.
What I was taught at the school of firearms technology is that seating depth is critical of start pressures. For those who have been reloading for a while, its a no-brainer. On that note, consistency is the key...another no-brainer. In theory, .001" will change start pressures. How do you measure it is the next question. With so many other variables, the significant of this may be water under the bridge. As reloaders, we have made big strides in this avenue. Love it! It truly is science! Love your videos Erik!
Awesome as usual my friend. Thoroughly enjoying this interview. Keep it up please! Thank you Erik.
Erik please keep making more interviews with Lou Murdica! This is super helpful stuff and we need more ov it! Please continue and make them longer with even more info :)))
Erik all your videos "kick ass"!
But these interviews with competitors like yourself are next level, thank you for sharing your time and experience with us!
Thanks for doing these videos Erik. all this powerful knowledge is why i find your channel to be such a quality resource.
Love these interviews Erik, thanks for sharing.
Again, this is pure gold! Thank you Erik and Lou !!!
Another great video series! Thanks Erik and Lou.
Hello Erik. I think that your method for using the barrel tuner is the best. I've been using barrel tuners during many years in rimfire benchrest competitions, and even if it's a bit different (with rimfire you use it to do all your ammo tuning research), I recognize many things that you explained before (tuning window with often the best grouping at both ends, and average grouping in the middle of it). This video format is so interesting, keep on going please !
Truly enjoying you two sharing your wisdom. I thought I had a pretty good understanding of reloading. Wow. I can't wait to get my press set up again.
Interesting Lou mentioned the 215 Berger; below .75 m.o.a. at 850 yards with my 1,000 yard National Match rifle, a hybrid with traditional 40X prone stock, customized surplus 98K action with Timney single stage match trigger, 28 inch Douglas XX, 1:10 twist, air gauged bull barrel, bedded and pillared with Redfield match peep sites (when required for iron site events) and a Vortex 'Diamondback' first focal plain scope (not a long range target scope in the opinion of most competitors) but outstanding quality and precision for as little as $280.00. Chambered in 300 Winchester Magnum.
Hi Erik, thanks so much for the great videos!! Really great to have someone with your knowledge be so willing to share. Going to be getting back into shooting after some time off. Your videos have given me a plan of action and have reignited my passion for the sport. Richard, South Africa
Hey Erik. You mentioned lots of people missing Tula primers. It’s my understanding that Murom primers are the same primer as what the Tula primers were. I have been seeing them available online. The Tula and Wolf primers were VERY good.
Keep em coming brotha ! Appreciate everything
Hey Guys
Great session thanks , I’ll be ordering a tuner from you soon Erik , Steve from Aussie.
I’m really liking these interviews
I found 7mm WSM to be super easy for tuning too. I wish the neck was longer. I've been thinking about having a 270-7mmWSM built.
I always have a barrel stub made for each reamer. With fresh barrels or if you move chamber ahead after throat erosion. Very easy to seat bullet just kissing the lands. Size brass seat bullet move seating depth till you can spin brass in barrel stub making faint halo on bullet. Been doing this shooting benchrest match's for years makes load development fast. Keep them small 👍
Thanks Erik and Mr Murdica on the Lands..to Jump or Not Jump.
I'd come up with more consistent shooting by being into the l and with a faint mark.That really solidified my findings by so.eone that knows much much more than me.
I've leaned alot from your videos Erik.
My 22-250 barrel has around 1000 rounds with severe throat erosion, but still puts the factory Hornady superformance in one hole with .240 jump
Again another great segment!! Thank goodness I have couple cases of Fed 210M cause I would hate to try a different primer in my 6.5/270 JDJ.
As other have said. I'm applying all this info to stock rifles and achieving SUB-MOA. Keep the info flowing Sir. I see a custom rifle coming my way in the near future. Thank You.
@10:20 mark, you started going into the large bullets jumps. Per Lou, he has never tested beyond .030". There was an article published on the precision rifle blog that talked about this specifically (jumps >.030 or .050). Per my understanding of this theory, it seems like it would not work for BR or F-Class but would work just fine for PRS since use PRS shooters are not going for the 1 hole groups necessarily. I am very curious to hear your opinion on this, with you being what I would consider an expert in this field. Thank you so much for the content! Your channel is my go to for all things reloading and precision shooting related.
i'm here bc of your update video :D
Another learning experience as Dad used to say. Two things caught my attention. Fist the effect different primers have on burn rate. Second, you both mention firing pins, and spring, I’m assuming that is to decrease lock time. Guess I’ll need to do more research on these 2 issues. I remember hearing many years ago that at the time the Remington Model 788 had the fastest lock time of factory rifles. Do manufacturers publish this info for their rifles or is there a way to determine it yourself.
Keep these videos coming Erik!
I don’t care about lock time. I just want to make sure primers go off when firing pin strikes.
@@ErikCortina That’s pretty emphatic Erik. I wonder if Lou feels the same for F Class and bench rest?
Love all this stuff. Any plans for a tuner for hunting weight barrels with and without the break.
Primer costs. Wow, I still remember loading 38 Special pistol with bullets I cast myself and paying 3/4 cent for a primer and 1/4 cent for the Bullseye powder charge. A penny a shot plus my time finding cheap or often free lead and casting/lubrasizing the bullets.
Great stuff Erik, I have a really particular question for you, and you seem to have just touched on it in this. How transferable is load specs between two “identical spec” barrels.
The reason I ask is if I go out and buy 2 barrels and shoot the absolute hell out of it getting experimental in every variable, once it’s retireable, if I then swap out for the new one (disregard burn in) and obviously there’s going to be a difference with the throat and how the lands have moved. How useable is my data? Am I 90% there and just dialling it back in? Do the spacing of the nodes hold the same relationship?
Essentially can I sacrifice an “identical barrel” exploring the configuration space to find other local minima that I wouldn’t have found by gradient descent alone because ‘I was saving the barrel life’ and not trying loads miles away from where I am, even though there might be a very forgiving and wide node I would never find otherwise.
There is no such thing as identical barrels.
@@ErikCortina hence the “quotes”.... just want to get a feel how different 2 ones machines to the same dimensions are
My question is, How do you pick the best bullet for your gun? Do you test several bullets, or just start with the one that you want and figure out the load? Same question for powders. I hate buying components that I won't end up using.
There are shooting disciplines where if your load can’t handle a big jump, you have no chance of competing. Single feed vs mag feed is really a different development challenge.
Where tobuy the bipod Mr Murdica talks about Alancia Bipod???
Erik, when you guys work on seating depth after you find a powder charge that works, which way do you go with seating depth off 20 thousandths? .003 up or down or both?
Stop bein' so hard on yourself Captain Cortina. People gonna hate what they don't really understand. I have learned this the hard way until I got into long-range shooting. That is primarily due to not having access to professional level athletes and coaches. I was always into sports that were cutting edge in the states. I promise you this; it isn't just shooting where people beat up on each other in the InterGoogles. I have seen some very heated (and been in a few online and in-person heated debates) on other sports. Having these long-range and highly knowledgeable super marksmen on here helps immensely. If you were selling snake oil, you would have a million followers for about a month, then once they figured out it was all BS they'd drop off. I see a lot of the same folks on here time after time. I continuously find myself sending new shooters with questions to you, Gavintoob, Winning in the Wind, F-Class John (I wonder if he knows this sounds like a prostitution frequenter?), and several others. It's always gonna be controversial in LR shooting, because of the number of variables and shooting disciplines. I am often told .284 is the only way to go in F-Class. I don't doubt that, but if I suddenly switch over to .284, then what am I going to lean about wind calls by changing over to a bullet that has a full 0.1 to 0.2 higher BC than the bullet I am currently shooting. I will still argue the guy shooting .223 or .308 and outshoots someone with a .284 is hands down the better marksman. This is due to the fact they're calling wind/thermal walls, etc much better than the .284 shooter (providing they're running similar equipment. Just keep doin what you're doing, because we're still listening to what you have to say. Keep asking these legends questions in a way which espouses a desire to learn. That shows us that while you know a whole lot, you're not afraid to learn more or verify your opinion is backed up by evidence. Lou is super data driven and I love that he is so easy to learn from and down to earth. I have found that is the majority of long-range shooters and the antithesis of the 3-gunners (bunch of tacticool peacocks they are!!) Drive on Captain. Keep our bearing straight and true.
What happened Erik to Texas Barndominium
Does Lou have a shop or website? Thanks, great video series
It sounds like Lou adjusts seating depth for each match which sounds like “chasing the lands”.
How do you compensate for deterioration of the throat when you measure from the lands? I wish I could afford to do this sigh .....
Aren’t tuners temperature dependent for smaller calibers like 6mm?
Erik here is my question I have learned everything I know from your videos and I have worked up some load's that people don't believe when I tell them however I'm just learning you guys don't jump far I get my powder charge then I start just off jam and 10 ish guns none have shot good from jam to 30,000 off and my best shooting gun shot 3/4 to 1.25 moa until 76,000 off jam then a 6,000 wide node that shoots 180,000 at 100 and 1"3/8 at 800 so why would your guns shoot close to jam but none of mine what is different? I wish my loads were within 30,000 load development would be alot quicker lol I do use the yellow boxes also
I love your content you put on. How much are your tuners?
Www.Erikcortina.Com
@@ErikCortina Thanks for your response.
How much can seating depth impact 100 yard group size?
So for alot of the normal guys. I think the 100thou jumpers is usually because of mag length. I think for 20thou of free mag length I'm about 80 thou from jam.
I wish aics mags could load longer.
Those darn sandbaggers…. LOL
What angle throat are your reamers?
So what does the tuner do for centerfire guys? I'm a rimfire br shooter and know what a tuner does for us , but what does it do for centerfire?
It does the same thing as it does for you guys.
@@ErikCortina lol I doubt that. You tune your load what else are you tuning with the tuner?
What's wrong do you know what a tuner really does? I've seen people on TH-cam with your tuner and the groups I see that they've shot and it looks like your tuner doesn't work very well. When the tuner is the correct "weight" and at the correct setting groups go to one hole. Either the people using them don't know what they're doing or your "tuner" isn't the correct weight. So please explain what your tuner does
Try RWS primers.
Pls like and share with your family friends or local range
great videos...sometimes i wish Erik would not interrupt so often.
Man, they just keep coming at ya. It puts the pressure on ya though. With all the good info, if I shoot bad I got nothing to blame it on.....
Eric,you talk over Lou's answers and we don't hear his full story.
Nobody shooting Winchester primers?
I watched your TH-cam demonetized AR-15 water can part 1-2 😂🤣😅🤣😂😂🤣😅🤣😂
Try standing freehand shooting at 600 yards the way my grandfather competed in. Lol
Why is there 2 dislikes on this video? Some people just have to be A-Hats!
Have you stopped making barndominiums ?
He said it's coming back in his live feed the other day (You crashed my web site.).
The #1 thing he is working on is EC Tuners @ $240-250/ @ XX??/day and paying for his lathe('s).
He totally lost me with the whole marking the bullet section in the beginning
You need a decoding WTF he means video
He is talking about when you chamber a round and then eject it the bullet will have a tiny mark from the lands of the rifling of the barrel. Meaning the barrel will leave a tiny impression on a bullet chambered.
Lou got it all wrong on pressure curves with bullet in relation with the lands…
Can you explain what it does?
@@ErikCortina well "jumping " lowers the pressure curve until the primary spike caused by hitting the lands .. not the opposite.
Being off the lands lower the pressure quite drastically. Like from being at the lands(near ) to let’s say 0.100" of that pt their is always a velocity drop. Like for me in multiple instance I’ve seen loss of up to 140 ish FPS going from close to the lands to 0.125 " ( for the same powder charge ).
Also it’s quite simple to visualize this with my pressure trace.