I've yet to take them hunting, though I plan on fixing that this season...
However, I've been blowing smoke for a while. I keep it traditional with the exception of an inline .54 pistol.
I've got a nice TC Hawken .54cal that's dead on @ 100yds... She's sure to fill my freezer this year.
Beyond that, I have a 'Zouave' .58cal, 2 .44cal '58 Remingtons, '62 Colt Navy police model .36cal, Trad Buck Hunter .54 pistol and my garage built Lyman Plains Pistol .54cal.
I absolutely love BP shooting... I even sold an AR to fund some of it

I have some Goex but have plenty of Pyro on hand. I always lube up and thoroughly wash everytime so I dont worry about fouling so much.
I also pour my own... Round balls, .54 Maxi balls, .58 Minie balls
Glad to see others are into it.
Not too many forums online, I've seen a few whose sites are straight out of the 90s.