The manual states not to load over 100gr of 2fBlack powder with a 405 gr minie. I use a 525gr minie and 70gr of 2f. For a PRB I shoot 75gr Goex BP and a 277gr PRB that I mould. The patch material I use is well worn denim. Old blue jeans. I lube the patches with bacon/sausage grease couldn't find any bear fat.
This load shoots clover leaf 3 shot groups at 50 yds.