Dimner
Named Man
Well that shouldn't be a problem. I run my tikka t3 in 308 at somewhat close to max load. 1gr under. Just where the best accuracy was. Never ran into a loose primer pocket yet.There are two ways to look at this. One is blowing up the receiver by the case head failing. Second is at what level can you shoot it until the barrel is alligatored or worn out.
For my worth, if you can't load the case at least six times before the primer pocket is loose, you are using too much powder. For modern brass that is about 60,000 psi, or 52, 000 CUP in a proper bolt action. FWIW
So if the 7x57 brass can handle 60k psi, I know the tikka receiver and mcgowan barrel are up to it. I'm not saying I'm gonna do that. I use quickload to estimate my pressures based off labradar measured velocity. I'm generally the kind of guy who stays aways from max and super hot loads. However, for this 7x57 having all the modern components built in the past 5 years, I think I'll push it a little past (like a few k psi) past the old timey pressure limits. That is, if the results lead me in that direction.
I would love to do pressure testing one day. But now I'm going to need to spend the winter and spring prepping for this project.
Did I mention that the other part of this project is a chilean 1895 in 7x57 that I'm going to put a K4 on? A brace of 7mms for deer hunting next year