I bought my first Italian replica Colt back in 1971 and had it mailed home. My Dad sent me a letter saying that they had received a weird kind of pistol. I had no BP experience at all. When I came home on leave, I emptied some shotgun shells and molded some .44 balls with the brass mold that came with the gun. I loaded it with 30 grains of 3F and a ball and shot it. After about 20 shots, I had a chain fire. One round went down the barrel and the other one went down the left side of the barrel striking the wedge. Recoil was considerable and the brass frame was stretched. It also stripped the threads where the rod that the cylinder rotated on, screwed into the brass frame. The gun was ruined. I double balled each chamber and retired it. I read later about putting grease over the balls to prevent chain firing. I graduated to a Ruger Old Army in 1976 and have been shooting it in competition ever since. I used to use grease but for the last 10 years or so have been using wonder wads between the powder and ball, just because it's cleaner and it also seems to shoot more consistantly. I've never had any problems since. Sorry for the long post.