I am trying to load some 9mm Luger rounds to shoot in a Norinco Model 213 for my wife. Factory Winchester rounds with 115 grain round nosed jacketed bullets shoot just fine, with the firing pin leaving a normal dent in the primer. I am loading these same Winchester cases and 115 grain round nosed jacketed bullets after the normal sizing, belling and bullet seating/crimping using really old CCI-500 small pistol primers with a price of $9.99 on the box that my brother gave me from a purchase he made from a club member's widow to get a shotgun reloading press. I am using 5.2 grains of W-231 powder in a metal can with the 1" diameter metal screw cap from the same source. I have used this powder in 45 ACP loads with modern Winchester primers successfully. When I fire the Luger rounds, about a third of them don't go off initially, and some of them go off on the second time by recocking the hammer. When they do fire, the primers are flat across the firing pin dent, like they are over pressured or something, and the pressure ironed the primer hole back out flat with some crinckles showing where the firing pin hit. If I load less powder the gun won't cycle. I haven't tried some new primers yet, but I have never seen the primer pin holes ironed out flat like this. Anybody have any ideas what the problem is?