Cat, the original poster was talking about stocking up on lead BB's for his 20 ga. I don't dispute your skill and the effectiveness of a 20 ga. with steel 2's or 4's in your hands, but I don't think the OP was asking advice about shooting waterfowl. I stand by my assertion that LEAD shot much bigger than #5's are unlikely to pattern well out of a 20. I have done the work at the pattern board with a half dozen different guns. I realize that's not very many, but enough that I have an opinion based on experience. Just for the record, I do kill a bunch of ducks each fall with 20ga. and 16 ga. guns shooting steel 2's and 4's. I agree that the smaller bore shotguns can be serivecable with steel shot in the necessary large size shot, (at close range). The reason is that steel shot does not deform like lead under the battering it gets in the small bore. However, pattern a 20 ga. with a load of lead BB's some time and see how patchy the pattern looks....