[Drdogface]

Jeff,
The guy I mentioned was using 5744 in his Ballard. A standard charge will shoot OK and be fairly safe but, like you, I would NOT use s'less in an original gun. I also cast (20:1 alloy) in my 45/90, 38-55 and 38-70 and with pure Black one can get an extreme spread in muzzle velocity of under ten fps. Never happen with any s'less powder I know of.