I had the same problem with my RCBS die, the pin would stick in the primer and pull right out of the neck sizing rod. After I tightened the collet, the pin would stick in the primer so hard that it would reseat itself on extraction of the case. I happened to have a Lee die, which has a larger guage deprimer pin. It pushed them out just fine. I figure the crimp in the military primer pocket is so strong, that the small diameter RCBS deprimer pin pokes through the primer anvil, and either pull the pin out or reseats the primer. If this is the same problem as yours', you may need to get a Lee universal depriming die. No matter what, you'll need a primer pocket swager, or reamer, to get rid of that crimp. KD