Thank youCongratulations!
Thank youCongratulations!
are you at all kin to Norman?See how the Top Shooters in F-Class do it.
You mean Great Uncle Norman Schwartzkopfare you at all kin to Norman?
Every time one runs a fired case up into a die, you run the risk of changing its external dimensions. If your gunsmith has done his/her work properly, the case should come out as straight as it will ever be. In my opinion, why try to change perfection. Do as little as possible.
The cases aren't really perfect after they are fired. As the case work hardens during subsequent firing the brass spring back changes and after a few firings its common to get sticky bolt lift. Bumping the shoulder in a good quality die, and measuring what you do, will result in cases within .0005" of each other each and every time they are sized. So we get consistent cases that never stick and shoot as well as neck-only sized cases. We get that consistency for the life of the barrel and beyond.
Creighton Audette demonstrated forty years ago that banana cases come out of perfect chambers from inconsistent case wall thickness.Every time one runs a fired case up into a die, you run the risk of changing its external dimensions. If your gunsmith has done his/her work properly, the case should come out as straight as it will ever be. In my opinion, why try to change perfection. Do as little as possible.
I believe that is why we index our cases prior to neck turning.Creighton Audette demonstrated forty years ago that banana cases come out of perfect chambers from inconsistent case wall thickness.
Believe anything you like, that won't straighten them.I believe that is why we index our cases prior to neck turning.
keep at it , sounds like you almost have it figured outI full length size but I still get the shoulder wrong a lot because I’m still learning, and I still need a hammer occasionally, but not as often as I used to. I got a new bolt knob but I don’t want to put it on yet cuz I’m not sure I’m finished hammering.![]()
I never said that indexing a new case would straighten it.Believe anything you like, that won't straighten them.
A case with significant case wall variance will always warp during firing, no matter what you do prior.I never said that indexing a new case would straighten it.
Do you believe it's common to get sticky bolts because the load is over pressure?The cases aren't really perfect after they are fired. As the case work hardens during subsequent firing the brass spring back changes and after a few firings its common to get sticky bolt lift. Bumping the shoulder in a good quality die, and measuring what you do, will result in cases within .0005" of each other each and every time they are sized. So we get consistent cases that never stick and shoot as well as neck-only sized cases. We get that consistency for the life of the barrel and beyond.
Do you believe it's common to get sticky bolts because the load is over pressure?
I've been loading 6MM Remington cases for decades, new cases are fired, neck sized, all cases trimmed to the exact same length then loaded.
Many are shot in excess of 20-25 times and never trimmed or resized, recycled when the neck splits. I have never had a sticky bolt when chambering or extracting a fired case.
Load is a Reloder 19, with 75 grain VMAX at 3,900 FPS, tested pressure on my first barrel was right at max average 65,000 PSI. I had to take the smiths words on that as I was not there. I shot enough rounds, slowly to burn out a barrel. Chucks, deer, no dog towns or competitions.
I believe if your neck sized brass is moving I'd back off pressure. Something's wrong, the heat and pressure is too much for the brass and or the receiver.
If you place the indexed cases at the same location to the bore, it takes the “banana” equation to a minimum. I would years ago when shooting a straight 300WBY, use this technique. It always seemed to help.A case with significant case wall variance will always warp during firing, no matter what you do prior.
That is why most top rated 1000yd Benchrest shooters have gotten away from the long narrow cases. Short and fat to minimize the Banana affect. It’s proven.If you place the indexed cases at the same location to the bore, it takes the “banana” equation to a minimum. I would years ago when shooting a straight 300WBY, use this technique. It always seemed to help.