30 rem for an old Model 8

[Rusty Scabbard]

I reloaded a few rounds for a Model 8. Old rifle, in great shape.
Ammo cycled well, no pressure signs.
But the primers pushed out about 1/16". The primer's corners are still rounded. Factory ammo has not done this nearly to this extent.
I'm trying to figure out if the issue is excess headspace, or if I need to load a little hotter or faster powder (timing).
If headspace is the cause, would it be correct to adjust the die a little higher to keep the shoulder out further ?
Being an old semi, I want to resize properly and not take any chances.
Thanks in advance for any help.

['ol shooter]

Need to have it checked with go/no-go gages, I would say you have a definite issue.

[God Bless America]

Need to load hotter.

Always a good idea to check HS though.

Try it ghetto style with scotch tape and factory ammo, see what you get.

[ar15barrels]

I reloaded a few rounds for a Model 8. Old rifle, in great shape.
Ammo cycled well, no pressure signs.
But the primers pushed out about 1/16". The primer's corners are still rounded. Factory ammo has not done this nearly to this extent.
I'm trying to figure out if the issue is excess headspace, or if I need to load a little hotter or faster powder (timing).
If headspace is the cause, would it be correct to adjust the die a little higher to keep the shoulder out further ?
Being an old semi, I want to resize properly and not take any chances.
Thanks in advance for any help.

That's definitely what long headspace looks like in fired cases.
Long headspace can be caused by a short case OR a long chamber or both.
The most obvious thing to check first is the gun.
If you can rule the gun as good, then you can look into why your cases create so much headspace in the rifle.
If the problem is the cases, then the solution is not to size them as much.
You only need to size them a couple thousandths shorter than your chamber.

[fatfreadiescat]

Need to load hotter.

Always a good idea to check HS though.

Try it ghetto style with scotch tape and factory ammo, see what you get.

I'm with you on loading hotter,
Had the same problem with Winchester 401SLR
Lite loads would blow primer out of the pocket (I mean clear out of the pocket)
work up slowly and see if that helps.