RE: FACT OR FICTION?????
You know, I never tried 777. Pyrodex was always cheaper.
As many times as I've cleaned my rifles, I never really thought there had to be a better way. It's always been part of the experience for me.
I remember my grandpa cleaning his old muzzleloader. He made his own powder, and as far back as I can remember, no cleaning patch ever came out of that thing that was pure white. A light tobacco brown was about as clean as it ever got. I always figured, with pyrodex, I'm still doing better than that.