Bruce is a great guy, he's absorbed so much information in a short time. Kuddos to him for being able to separate the good from bad, and turning it into success!
Thanks for another informative video. I have never seen an inconsistent accuracy problem solved by a tighter neck clearance but I've seen many inconsistency problems solved by increasing clearance. I bought a gun and brass off a guy who believed in tight necks. The gun shot great and I won a fair amount of benchrest for score matches with it. He had the brass set up for 0.0015" total clearance(a bullet would not fit back down a fired neck). I like to set mine up at 0.003-4" so I decided to turn the necks to see if my belief held. The next match I shot the highest X count in 4 years with a 6mm. 300(30 shots in or touching a 0.500" circle and 22X(22x of the 30 touching a 0.080" dot.). The average distance from the center of the bullet to dead center point of aim over 30 shots was 0.137"(or 0.00155" if you use the edge of the bullet). I keep detailed X and Y data(distance from perfect center shot) for every target I shoot and these three targets were the best the rifle had ever shot by a significant margin and gone was the occasional unexplained "flier". You need a clean/consistent bullet release and unless your brass has perfectly consistent neck thickness the easiest way to ensure this happens is to give the neck adequate clearance. I re-chambered a guys hummer barrel which had a 268 neck in it with a .271-2 neck reamer. He decided to try keeping his old brass which now had 0.008" clearance. The brass has powder residue down past the shoulder and is more accurate than it was before. These are obviously anecdotal but I can think of at least a half dozen instances right off the bat where increasing neck clearance to the point that a bullet will slide into a fired case without resistance has made the gun more accurate and more consistent. It almost always results in better SD/ES as well. At the end of the day every rifle is different and different bullets and calibers can like different things. There are so many variables in the process that it's very hard to say anything is going to work 100% in every rifle and for every loader.
Awesome interview mate and I follow Bruce’s channel as well and by putting both of your information together I’ve started winning some state matches down here in Western Australia, by changing just a few simple things in my 284 and my Grunt (which is an RSAUM improved) they’re seriously just hammering and if I miss the 6 ring which is our centre here I’m just not doing my part and mostly just pumping the X ring. Thanks again Erik for putting out amazing interviews and love chats man. Cheers from Australia 🇦🇺
Another great interview. These champion to champion interviews show common themes in becoming a champion. I would like to see an interview with Dave Gullo a multiple BPCR champion including multiple Quigley Match champion. You and Dave have much in common, both: - Turned your avocation into a vocation. - Manufacture popular accessories for the shooting sports that are used by championship shooters. - Freely share information with shooters like myself - Are always at the top of page one for your matches - Support shooting matches at the prize table. - Use a front rest - Require extreme skill to shoot well in the wind - Shoot custom rifles and finely tuned cartridges - Compete at Ben Avery Surely both of you have stories about the pitfalls and joy of making a business out of what you used to do only for fun. You could share the mindset of a champion. Dave is available at Buffalo Arms Company in Ponderay, Idaho. V/R Jeff
Love watching both of you. Pretty neat to watch you both in one vid. 👍I’m at .321 neck chamber w/ 284 and have won the last 2 matches at New Braunfels. So, tight maybe works but maybe loose can work too.
This is an awesome video, I've live close to 1000 yard range, 1 hour from Coalinga and I go out there and shoot once in a while, I spend most of my time at Visalia where it's a bench club that goes out to 300 yards. My son and I were talking about how high the flags are at Coalinga and my response was the bullet is going fairly high over the target. My 6 cm is 266 inches over the target before it makes its way down to a X...lol. That's 22 feet. When you set up your target, the bottom of the target holder is probably close to 10 feet off the ground. That would put the bullet at least 32 feet above the target at the top of the arc on its way to the bottom of the target and the center of the target is a few feet above that. Am I wrong? Is that why the flags are so high? If I look straight at the target through my scope I'm seeing the mirage in a straight line to the target. However my bullet is not traveling in a straight line to the target, it's traveling in an arc to the target. I ordered a tuner and can't wait to get it and try it out.
I learned everything from Precision Shooting magazine in the 90s and used to neck turn my 223 brass for my 246 tight neck chamber, and then neck size only, so that i could do as described here and just seat the bullet and go. But I found that after 3-4 firings the body had grown so much that i couldn't get it out of my bullet seating die without levering it out with a stubby screwdriver, and started reluctantly to full length size every time. Then i realised that that was the only way to ensure perfect consistency anyway. Now Erik Cortina has persuaded me that its the only way to go and i believe him.
I’ve head luck with the new no turn reamer for the new lupua brass throated for the 180s nothing but impressed shoot a few zeros during load development
One item many fail to understand. As the throat erodes, the start of the lands changes very little. The leade cone angle is what changes the most. If your leade is cut with a 1.5 degree angle, as it wears the angle will reduce and ultimately becomes so shallow that the bullet engraving into the lands becomes easier. Therefore, if you "chase the lands" you are basically trying to reset the engraving pressure. At some point you will never be able to reset the engraving pressure to what was optimum for your barrel. Reduced engraving pressure will change the burn rate of the propellant, and by chasing the lands you will be adding effective interior case volume. In order to continue with the level of precision you once had, you may have to add propellant, or even switch to a slightly faster propellant.
There's this one guy that shoots short range,, he's been interviewed on this pop cast too. And he swears by a .272 no turn. Either he's trying to keep a secret, or there's something else going on which makes his shoot. The targets don't lie.
Doesn't seating in the lands cause a huge pressure spike as the bullet first starts out which also results in more throat erosion??? Which causes the detuning.
