I've been a big fan of Bismuth in my L.C.Smiths during the last few years of waterfowling. With the loss of Bismuth last year I too have been buying up as many non-standard Bismuth shells and cutting them open for the shot. I did buy some Nice Shot from EcoTungsten and must say it patterned and performed beautifully. 3 or 4 kilos of the stuff is enough for a season of goose hunting for me, so even though it is oh-my-god expensive, per shot cost is doable. It does make one knuckle down and shoot straighter!