I guess since I've shot flintlocks since the 70s I don't see the problem with Goex FFF...I still use this in my flinters and my Knight...I've tried 777 and had to lap the barrel to get rid of the crud ring...I've used Pyrodex when I could catch it on sale but didn't see any advantage of it over Goex...I'm too tight to pay for 209...I figured if I didn't want to have to clean a muzzzleloader I'd get a Savage and shoot smokeless...
Guess I'm just bass ackwards, I'm still using XTPs as well...