I think outlawing lead shot was a mistake. I understand that some waterfowl died after injesting lead shot, but many birds have been crippled with steel that otherwise might have been brought to hand. How about this for a solution:

Let waterfowlers shoot lead shot, but tax it so that it's price is equivalent to that of steel. Turn that increased revenue into a Ducks Unlimited-type conservation program. Long term, wildlife suffers most from lost of habitat, not a few injested lead fragments