I have two 1860 armys. When I first got them I got the Tresco nipples and went to number 10 caps which I think were Remington or mayby CCI. Anyway they worked reasonably well after I polished the nipples. I decided to shoot these pistols again and bought CCI numbers 10 which do not fit these nipples. So I went back to the original nipples, polished them some, and used the CCI number tens which would go on easy unlike they did on the Tresco nipples but find they don't all seat very well. I c