Home Forums Reloading Big Game Rifles Fired/spent primer

I though that is what you were talking about. That isn't primer leakage but that would indicate to me a bit large fireing pin hole. Leakage would come around the edge's of the primer. No sign there but the primer fills out the pocket more than I would care for. Primer's can be a bad pressure sign in that some have softer cups that fill out the pockets easier than other's. I think he said the pockets remained tight I don't know much about checking case's for pressure from a single shot. Not surewhar the case head should measure on the cartridge your using but I'd find out and them try measuring case head. For the 257 Robert's my Hornady book says .471. If your larger than that I'd say to much pressure.