I use starline for my SAA in 38-40 and universal powder. I would buy a double action in 38-40 if they made it, or a new lever action from rossi, winchester, browning etc. Think of 38-40 as a rimmed 40 S&W...that's basically the ballistics of it, but it's bottleneck a smidge, so it can fit in 45 colt belt loops.
