Primer

#1 · March 23, 2012, 1:09 pm

I am having problems with about ever 10th case the primer is not seating properly. The press has only 300 rnds through it. It is also leaving marks on the primer. some done seat at all. others shear off the edge of the primer and look malformed. I am using Federal SM Pistol Primers.

#2 · March 26, 2012, 3:37 pm

What caliber? What headstamp? Be sure the brass locator button is installed , and is correct for the caliber you are loading. It sounds like you might have some cases with crimped primer pockets.