Has anyone run into the problem of priming 375 Mag S & B brass? I did some the other day on my RCBS rock chucker with piggy back two system and had all kinds of problems. I eventually full lenght sized/deprimed the brass and then put that brass through my RCBS primer pocket swaging tool. After that I reamer the primer pocket with my Lyman primer pocket cleaner/reamer. I eventually had to hand prime the S& B brass with my Lee hand priming tool. All other brands of brass worked fine on my rock chucker press.
I have run into this problem before with 9mm S & B brass.
I have run into this problem before with 9mm S & B brass.


















































