Daryl I have 3 sharps cartridge guns and when I tried to switch to Old Einsford not one of them would shoot worth a dam. The can I have may very well have been out of the first run. Everyone raves on the stuff. I do have some of the Old Einsford 1 1/2 left I may try it. Heelarau I was cleaning the full barrel Between shots and had no problems but will keep it in mind. My hex bullet mold is already casting at the max size and if I go to a alloy bullet It will probably be to tight. But It may work for the grease groove bullets.