I was wondering if anyone would know why my Lyman 54 cal. has havingtrouble with FF powder. By trouble I mean that it will fire the first time it is loaded no problem. After that nothing. I have to back the nipple out and pour in FFF to get it to fire. I bought two cans of FF when I first got the rifle thinking that was what a 54 cal. prefered. Sure would like to use them up if I could. Any Ideas would be great. Thanks