I recently accquired a percussion double 10 gauge from the 1840s and I want to yse bismuth as steel will tear up the bore. The previous owner used copper plated lead for waterfowl (illegal) but never got questioned by DNR when he said he used copper mixed with tin (sneaky). I want to use bismuth since its non toxic and roto metals has a lot of it. I live in Maryland and the local waterfowl laws state that non toxic shot only can be used in no excess of .20" or 1/5th in diameter. So I picked up some T Shot and F shot moulds and then it hit me.... can bismuth be used in a mould designed for lead ? I assume so right beings as Bismuth is soft just like lead and melts at a pretty low point. Anyone have experience smelting bismuth and making shot out of it ? I have never used anything but lead to make shot, buck and ball, round ball, minié and pritchett balls. Thanks for any input.