I figured I'd share an incident I had yesterday. I am very new to reloading and reloading for 44 mag to shoot in my Super Blackhawk. While shooting paper I fired 3 rounds and proceeded to shoot a 4th, however the primer did not go off. I opened the gate to retrieve that bad load and found the cylinder would not turn, it was locked up pretty good. I tryed knocking the cylinder out with a non marring hammer but it seemed pretty futile and I had 3 live rounds in the revolver. After several more heavy whacks with the hammer the cylinder finally came out, what I found was a less then 240G XTP sheared off and sitting in the forcing cone. Im not sure exactly what happened, but the case had a slightly raised primer which I found prevent rotation of the cylinder (lesson learned check all primer seating). Im thinking that my bullet crimp may not have been heavy enough. Anyways, the revolver appears to be damage free and I later fired a cylinder full of factory loaded cartridges. I have never heard of anything like this happening.