I've never used BH209, so I can't comment on that. This is what I use in my Encore. If you're at the range shooting it, I generally have to swab it out after about 7 rounds. When it starts getting dirty, I need to use my ball starter to push the ram rod all of the way in that last little bit. Like Pappy said, if I used hotter primers, I might not get build up in front of the chamber. But remove the breech plug and swab it out and you're good to go.
295 gr. 50 cal. Power Belt hollow points
Two 50/50 777 pellets
209 primers (nothing special)
TC Black Powder Bore Cleaner.
