I have a brand new Uberti Cattleman in .45 Colt that keeps locking up on me. The primers seem to be coming out of the pockets a little (not sure of the correct terminology for that one). The "expanded" primers are dragging along the rear of the frame from the firing pin to the loading gate and are getting caught on a lip in the frame on the opposite side (see pictures). I don't think I'm using too hot of a load (8.0gr Unique, 250 RNFP, 1.57 OAL) and it has happened with both Winchester and CCI large pistol primers. Any ideas?