What would cause this

[buzzyb]

Ok I think I have it figured out. I bumped shoulder back to .003 and I uniformed primer pockets went and shot today and things went good, thanks so much for all the help.

 

[MW204]

Primer sticking out too far, cause, a dirty primer pocket from reloading. Clean the primer pocket and see if that fixes your problem.

 

[Rack]

I hope he's got it fixed by now. This trend is almost a year old.