Took my RB to the range. I used some bullets from a friend Lyman 400 g.Shot 13 g Trail boss and 12.5 Universal clays (45-70) The Universal clays shot good. The Trail boss where terrible ( Key holed) The bullets were lubed with Lyman Moly. Why would the differant powders make such a big differance? Also the bore which previously was fairly clean when a patch was run thur was filty black with lube / powder. I use beeswax and Crisco Never had a problem with 350 g Ranch Dog bullets ? Any clues? Rick( dont know the velocity of the loads)