To my knowledge, all lead shot sold in the U.S. is plated with Bismuth. The risk of toxicity is minimal. Lead is most toxic when it is part of compound that can easily be absorbed by the body, such as tetraethyl lead that was once used in gasoline. The metallic form is very poorly absorbed by the body, but be cautious not to inhale any powder or fumes from molten metal. You should get the smallest size shot you can. Buy it at a gun store that sells reloading supplies.
