I've tried all kinds of powders in these guns. Pyro, APP, 777 and real BP. I find pyro and real BP about the same, both work well as long as you lube over the ball. I have troubles with APP. It's dry and will seize up my guns unless I use lube over the ball, which kind of defeats the purpose of APP. I like 777. It shoots wet enough you don't need lube over the ball. The only draw back is it's about 15% hotter than the others. That's fine, but the recoil gets noticeable with full cylinders! So, I'm back to real BP with lube over the ball. It's actually cheapest to shoot, I have a 1/2 case of elephant and Goex that I bought years ago for $4 and $6 a pound to use and I can by Shutzen for $10 a pound locally, which beats pyro and the other subs which go for at least $20 a pound around here.
I have tried corn meal, just too much hassle, and a pretty near full cylinder of black is plenty accurate for cowboy shooting anyway.
Oh, thanks for that info slowpoke, I never thought to fill the cylinder flush then ram the ball compressing the powder till the ball sets flush with the cylinder mouth. I'll give that a try with BP soon and see how it works.
Thanks again all! :bow: