Free: Contests & Raffles.
If you are hunting State land or release sites you are required to use nontoxic shells. I load my own shells, #5 Bismuth for 20 & 12ga. Steel is OK, but I would drop down to #5's, 2 3/4 works just fine. None State land you can use lead just be aware where you're hunting, I like #6 for that.