I read the USF&W approval of bismuth. It just approves bismuth 97% tin 3% and less than 1% trace lead. I would want a certification from a supplier stating that the bismuth alloy met that standard. If you could find a supplier that could provide the correct alloy and the ability to make spherical pellets and not have a problem with the bismuth pellet manufacturing patent 5540749. The use of bismuth shot in shotgun shells is also covered by a patent 4949644. If you do your own reloading are you violating this patent?
