Where are you getting your Bismuth at? Ballistic products isnt listing any in there new catalog. I'm shooting an 1886 pat, pre hunter arms 12 ga but will only use black powder.I hav'nt been out duck hunting with it yet,[I have 5 bismuth loaded] but I shot in a mason fun shoot I was invited to, and I did well enough to impress a few. Looking foreward to Phesant tomorrow if things work out right. Beautiful 10 ga,That makes me about as green as I can get