I've been shooting black powder revolvers for many years; not an expert; not in competition; but experienced, definitely. I am seeing many posts on the net about loads and brass frames. I have learned the following through study, trial and error. Load compression and powder performance are linked. In a brass Navy .44, I find that 13 grains of 3F BP with cornmeal on top, thoroughly compressed, throws a soft ball bullet with a very decent amount of power. Lightly compressed or barely compressed loads give a lesser performance. I was able to strike targets (large targets) at 100 yards off the bench with 13 grains well compressed. I could go to 25 grains, but really don't need to, if the powder is well compressed under a filler like cornmeal. The pistol keeps well in brass at 13 grains. It doesn't need big loads. Everybody seems to want to dump big loads in these guns and you don't need to. Powder compression is related to performance. Powder loads don't need to be very large loads to obtain performance.