Hi, I thought this would be the best place to ask the experts. Factory S&B 7.5 swiss and 8mm mauser. Do these primers look bad or normal for factory s&b? No sticky bolt or other pressure signs. Would hlgunk in the chamber flattened a primer but not cause sticky bolt?
Flattened primer on S&B 8mm?
- Thread starter Hastur
- Start date
when you typically use primers of a indication of pressure signs what happens is the primer flows and fills up the cup just because they are flat really has no bearing on there being a problem
so much to learn grasshopper
so much to learn grasshopper
Over sized brass will slam into the bolt face and flatten the crap out of primers when fired.
This is why setting your dies for minimal shoulder bump is the way to go(partial FL sizing)
So it’s hard to say, one way or another, since you don’t explain your case prep process.
Case head expansion and chronograph velocities can tell so much more.
This is why setting your dies for minimal shoulder bump is the way to go(partial FL sizing)
So it’s hard to say, one way or another, since you don’t explain your case prep process.
Case head expansion and chronograph velocities can tell so much more.
I dunno about you, but I don't have much of a case prep routine for factory ammo.
I musta missed that with this being the reloading sub section.
But what I said holds true, with factory ammo in a potentially borderline chamber for headspace, the cases grow into the bolt face and flatten the primers….. I actually saw this just the other day with some factory .264 Win Mag in a factory rifle with some generous headspace….
Different ammo, different spec brass, so it behaves differently.
