In real bp I use 70grs. of 3f gfoex, .015 thick patch lubed with bore butter and a .440dia. home cast bullet. Since converting to caplock I use 60grs. of 3f triple 7, (fouls less, more shots), and same patch and ball. I tried .010 patches but they didnt hold up well through the bore. Cant tell any accuracy difference between real bp and triple7. I have found that while pyrodex can be accurate you have to increase the load to get the same accuracy, and I would think velocity.