I have a few of these, but bought one a few months ago that misfires a lot. I tried Federal primers, which are generally known to have softer cups and it helped, but the primer strikes are light.
I took the barrel and stocks off and soaked the action in a bucket of Ed's Red for several days hoping that would clean up anything that might be slowing the primer strike, but it didn't make much difference.
I've heard they can develop excess head space, but this one locks up tight. I've heard these are a PITA to disassemble and reassemble and I'm not sure I could find new springs or firing pins anyway and a used one may be just as bad.
Gonna try the easy stuff first; neck size brass, try a different brand of brass, maybe some different primers. Any other suggestions of how I should proceed?