I was so disappointed with results of bismuth loads that I gave away about 10 boxes to a duck hunter friend. I had used them on some preserve pheasants for an old dogs last hunt. All six birds were very lightly crippled as if I were shooting very light loads of very small shot. It did give the old girl a good workout, though!! This was about 7 or 8 years ago. These came in green boxes and I don't remember the company that loaded them. Hopefully the new stuff is much better.
I wish I had been that recipient. I find Bismuth #4s to work very well in my handholds, at moderate velocity. I load 1 1/16 oz. in AA hulls for one of my Foxes, and if I hit 'em I kill 'em. I don't understand the issues some people say they have had. I sure haven't, they work equally as good as 1500 fps steel loads for me in my BSS.
SRH