ORIGINAL: roundball
FWIW...I used Pyrodex Select and RS in MK85's and TC Hawken sidelock percussions all during the 90's...never had to wipe between shots...the trick was to use borebutter for lube, no petroleum based products.
I concur .
I know that Borebutter sometimes gets some bad press , but I've used nothing else and never had any problems with it . Fouling is light and soft , my bores sparkle , and when used as a lube the bullets seat with relative ease . I shoot Pyrodex RS™ exclusively .