Visit my website: erikcortina.com/ The full Jack Neary interview can be found on my website on the forum section. Click link below. www.shootsmallgroups.com/comm... Get my shirts here: erikcortina.com/merch
These interviews are of immense importance. Anyone who is interested in improving his shooting should watch them. They remind me of when I first discovered Precision Shooting magazine, only better, because the information is straight from the shooters' mouths. Thanks to Erik and all who he interviews. Without this sort of thing, important, hard to come by knowledge would be lost forever.
This 15 minute video was the single most important thing I have ever seen when it comes to precision loading. These items were the answers to questions it would have taken me a lifetime to find on my own. Now I know exactly why I have fliers in a known very warm load.
This series of videos are the kind that should be on RU-vid! Real world class knowledge! Not like a majority of the videos on RU-vid. Keep them coming Erik! This is the kind of quality content that made me subscribe to any channel you have Erik 🤓
Thank Eric and Jack. I've probably spent enough money on components learning what you guys are giving in these first four videos to buy a New f150...King Ranch.lol Can't wait for more!
Wow! Amazing!! I want to learn more! Truly things I never hear being talked about! Great info sessions but too suspenseful waiting for the next episode!! Lol! Thanks for doing this guys! If you have example pictures of the group patterns you're talking about that would help a whole lot also!!
Shot IBS for a few years, had a great teacher or teachers, learned about this my first year and its the first time i have ever heard anyone speak about it not in a hushed tone.. this is why competition BR require such precision in equipment. Tiny almost inpercievable adjustments can be magnificent when consistency is real.. unbelievably great video on tuning!!! Ty!
Thanks Erik, jack I just tried 10 different loads for new 300prc with one 5 shot group at 420 "" acouple around .6 / .7 and the rest out to 1.6 ' max, quiet a few had wicked three shot hole but the other two spread them right out, I got home and tried to analyse the target with not a frikken clue, timing for this video couldn't have been better for me as now I know some at least how to make some sense out of it Thankyou so much gentlemen Cheers Rob
Awesome interview. looking forward to seeing how much of this I can implement. Going to definitely try that bullet stick test with my next barrel and start looking at 100-200 yard targets to see how the bullets are flying, that sounds like as much art as science so I'll be interested to see how it goes. I think my last barrel guppied me with a few good groups but would sometimes squirt a round or two as you say out of the group. or form two ragged groups.
I bought a 6.5 PRC made by a company that guarantees 1/2 MOA or better with a given factory ammo. In this case it was Hornady 143gr ELD-X. The 3 shot group target that came with the rifle was .319 MOA. Bullets have been hard to find lately but I got a good tip on someone who had unopened boxes of Berger 140gr VLD Hunting, so I bought 2 boxes. Not my first choice, because I know they are finicky about seating depth. Before going out to do some seating depth testing, I re-read the write-up on the Berger website about how to find a good seating depth with VLD bullets. The instructions said to prepare 4 groups of 5 rounds. Rounds were to be seated at 10, 50, 90 and 130 thousandths off the lands. The instructions said that your rifle should like one of those seating depths. I MIGHT HAVE A “HUMMER” BARREL?? I prepared 6 rounds of each seating depth and one round seated at 5 thou jump just for the heck of it. That left me with 5 extra rounds. The extra rounds were for testing velocity with my magneto speed. So, I shot the 5 rounds with a variety of seating depths with the magneto speed strapped to my barrel. First the .005 jump, then the .010, then the .050 etc. To my amazement, all 5 rounds, SEATED FROM .005” to .130” OFF THE LANDS WENT INTO ONE RAGGED HOLE, MEASURING 0.340 MOA. I had been chatting with a guy (also a reloader) on the bench next to me, so he knew what I was doing. He said he never would have believed it if he hadn’t seen it with his own eyes. My next 5-shot group of all 10 thou jump, still with the magneto-speed on the barrel measured .310 MOA. This is a pretty amazing barrel, maybe even a hunting version of a “hummer”? The last 3 groups were crap, but by that time I was more interested in velocity testing, because I noticed velocities in the first 2 groups were dropping each shot as the barrel warmed up. My ES’s were atrocious. The worst was 100 fps. This is a hunting rifle, so it has a light barrel. After the first 2 groups, I fired my remaining 3 groups of 5 waiting 5 minutes between each shot. My ES’s for the remaining groups were in the low 20 fps’s, a huge improvement. 5 minutes seems like a long wait between shots, so I’m going to test with 5:00, 4:30 and 4:00 next, to see if I can save some time in my future velocity testing. Anyway, I’m happy with my reloading. Groups of 5 rounds, each with ES’s in the low 20’s is good enough for the shooting that I do.
Noticed that shooting my 32-40 about 30 yrs ago, up the charge, depending on wind and temp, group closed up. Never clicked on me just how significant it was overall. Probably did it 100 different times, normal chg was 13.2, go to 13.3-13.5 range, cleaned things up.I remember one day going to 13.8, it was about -25C that day, worked like a charm. I watched the VV presentations he just did, didn't click on me then, but, did this time, as he gave that example with his buddy this time.
Recently discussed BR vs other disciplines. These folks are the cutting edge of the sport. I was of the school of thought; BR is about how much you spend on reloading and components, barrel, and less to do with marksmanship. I am happy to say I was wrong. Without BR we'd still be 50-75 yrs behind in every other rifle discipline. These people deal with data on a whole new level. Super technical.
This is invaluable knowledge pal. The one good thing is that i am new to reloading. I have only reloaded with a friend on his equipment. My equipment hasn’t even arrived yet. I am just sucking up info from reputable shooters and reloaders like yourself. You’re a pro and i have great respect for your accomplishments. Just finished your videos on not chasing the lands. Watched the video on the jam. Made perfect sense to me. Like you said Erik, chase the node. I am extremely interested in meeting you and taking some reloading classes with you. My friend has shot at nationals with you in the past. Once again thank you. I really appreciate what you do for us. Next up is to get on patreon.
Eric, Jack thank you so much for this video. I never knew that there was a science behind reading your target. I've literally been taking down notes. I'm curious to know if the same science translates to something like an AR-15 Barrel that has a lot more moving Parts behind it?
Like Alice and the rabbit hole, away I go!!! I thought I knew something about reloading, turns out I know squat!! I read the basics didn't understand all the science, I like science. Thank you Erik!!!
The problem I see with this is that many bullets can have a few thou variation on B to O and you’ll end up then with another variable to overall length. I take seating depth as B to O for consistency but must admit that I struggle with the idea that two thou can make a huge difference to groups when on some nodes it might take 0.4 gr load difference to shift that group. This all assumes that neck tension and case length are all identical.
Pictures of the described bullet holes would be nice. When the paper tears, all the holes look like torx bits. Bullets sideways is easier to understand.
What are the chances of doing an in depth diagnostic on the way the bullet holes print on paper that Jack mentions with visual examples of each? Great content!
I wonder how much change temp/humidity effects you F-Class load. Let's say big match velocity in am vs pm. I know with rimfire it happens. Do F-Class shooters use a sealer? Love these videos. Cheers
Great content Erik - thank you. It's really helping my load development work. I was very curious about the Torx hole issue being a bullet that was "over stabilised" - I need to research that a bit more - I didn't realise that was a thing !! I do have one question, if someone could explain it; What is "weather reporting" - what does that group look like ? - I've not heard the phrase before....
It's a flat group that is very wide. It's wide because it's very sensitive to wind, so it "reports" every minute change in wind because it doesn't "fight" the wind.
Hi Eric I think I'm starting to get the hang of this. So based on your advise I re-did my load analysis using .2 gn increments. I'm pretty sure I found two nodes. One at 84.2 grains and another at 86 even. My 100 yd groups at these points were 1/2 inch. Pretty much everything else was all over the target LOL!!. On the chart I made these were the two spots where the bullet speed actually went obviously slower than the shots before and after, hmmm??. Next I plan to load up 10 or so in each load and alternate 5 shot groups to see what load does best. I'm thinking 86 will be best because the higher speed could be less effected by wind and other variables. The question I have is regarding bullet seating depth. I made the mistake of going .005 increments the first time I did it and ended up with my best group (4 shots through the same hole) at .040 off the lands, Hmmmm? again. I know now that I should have went with .002 increments, and used the jam method to find the lands. The question is, to find the seating depth node do I look at the velocity? or do I just look for best group? Or both? And considering that I'm at .040 off, will a much closer seat effect where the loading node is? I haven't found a vid that goes through the whole process from new barrel/ load analysis/ seating depth. Beginning to end. And (correct me if I'm wrong) but it seems to me that one would have an effect on the other. Thanks for any advice
Wish that Eric had answered because I have the same query. Watching other videos has led me to believe the powder load is what is done first to find those nodes .I don't know what the distance from lands is for those initial loads but think that Eric mentioned .010 in another video. I'm just staring to shoot a 6 BRA so I'm wet behind my ears. The first bullet I tried I set jam length and found the best group ladder test without a chrony because I was fireforming brass. I then took that load and varied the seating depth .010 at a step and found my best group there. Same principles but without tiny steps on seating depth. I did notice the vertical and horizontal stringing just below the more ideal powder loads. Now I'm working a different weight bullet finding the poder nodes over a chrony. I'll then be using the more miniscule changes in seating over a chronograph . I am trying now to narrow the powder charge to .1 increments before seating depth consideration but going thru a lot of bullets to do that .I have found two powder loads but it looks like I'll be wearing out the barrel finding seating depth. For this I'm assuming one has to ignore the patterns and go for consistent low ES. At this stage it seems like it is going to take 100-200 rounds to get there which isn't good because of limited supplies. That has been the frustration to me. A video going A-Z would be better because as you note, seating depth and velocity seem to affect the other and reading bullet patterns from this video will be a moot point.
@@jaspermcconnell6417 Ya. This has been quit a learning curve for me too. If I had a better idea of how to get to the best load and seating depth front to back as one process at the beginning it would have really taken a lot less time at the range wasting ammo and waring out my barrel. At this point I'm resigned to just letting my first barrel go as just consumable learning material. Do better on the next one. But lets give a big hand to Eric for sowing the way.
Hi Erik. so i am shooting groups where i get 3 in one and 1 is always just outside of group. thought it was me pulling a shot but it might be load is just that little bit hot. read speed with lab radar though and ES is 7 from 3 shots. so do you think it is just me pulling one or must i decrease powder just a little
I am looking at my 308 300yd node test.... LEGIT has waterline then 3 and 1 then narrow water line and 5 touching with a creep of vertical then slowly blows out to a splatter! This video was like someone (me) being pulled from a mental hospital and told your not insane haha
Just when I think it can’t get better. Maybe this has to be Patreon if I expect an answer but, how do you effect bullet stabilization? I thought this was a factor of twist rate, bullet weight and acceleration? So if your load is hot to fight wind, you really can’t increase bullet weight if it’s overstabilized. I didn’t know overstabilization was an issue other than bonded bullets coming apart at 50 yards..
I've never understood over stabilization, that to me seems redundant to an extent because when something is over stabilized in other words "extra stable" that just means it's stable, which is not bad 🤷🏻♂️ idk
Sorry for what might seem a stupid question (new to the game), but what is meant by "weather-report"? I can deduce it's in regards to flat, rather than vertical group...but I don't get what the reference is, specifically.
Erik, I was watching some videos on fliers. Do you have a record of all your” fliers” relative to the last time you fully cleaned the barrel? You could make a plot of number of fliers vs when that shot was take relative to last clean. You should get some sort of distribution.
Eric, what's your opinion on Bryan Litz's conclusion where he said in an ELR forum: "in my experience, barrel harmonics, nodes, have never been a driving factor in precision. It is a fact that barrels vibrate, I have never observed those vibrations correlating to group size. There are some hand loading topics covered in the modern advancements books"? I was just curious as I thought that fine tuning was all about finding the load. The original question was: "Just curious on your guys' methods for developing Elr loads. I was testing velocity nodes with Labradar, then was going to finish with barrel tuner. I have spoke with some other people, and some guys are saying they shoot ladders at distance and tune powder charges for grouping on paper. I was thinking Low Es and Sd would be primary concern with Elr, some guys are grouping good on paper without placing low Es and Sd numbers as primary. What are your thoughts?" Thanks Mike
How does the load help buck the wind? Bucking the wind is done by the bullet aerodynamics combined with a range of acceptable muzzle velocity. Wide groups if affected by wind is just you not reading wind and adjusting. Why would you try and fix wind by reloading procedures?
@@ErikCortina i was wondering how reloading can change how bullet reads in wind too,im not trolling i swear lol , I just started reloading and really am trying to get the precision knowledge down before I start using my supplies, do you have a video on this already,or is it something you can do video on for us new to reloading
@@ErikCortina Thanks for getting back to me. I am a subscriber to your channel and have learned so much. Watching the videos with Jack Nearly was mind plowing about reading the bullet entry holes and adjusting the load! I can see why he is one of the best. And you are one of the best in F-Class, also the interview with the Amp guys was extremely interesting. Thanks again for a great channel.
