I would be surprised to see it come back unless imported from England. When Bismuth came out it was the only alternative to steel. Now there is Heavy Shot, Tungsten etc. Bismuth is needed by waterfowlers shooting classic doubles as modern guns capable of shooting steel have other alternatives mentioned above. Perhaps if lead is banned for other types of hunting besides waterfowl it may come back but until then I believe the market share for it is too small for commercial production.