Like chambers said. 9 bellet buckshot is the max. You will want something tight for buckshot as we will ne shooting those strange IPSC square targets that ate about 8 1/2"x11" at 5-25 yards. The goal with buckshot is to get to hits on paper ti neutralize the target. Most of you have probably never utilized buckshot like it's supposed to be used so we are gonna test your pattern. I'm thinking we will do one of those mixed target deals where you gotta shoot a slug, then buck the bird them reload and do some more randomness. It will be clays for the shot, Ipsc paper for the slugs and A bunch of those cool IPSC A & B targets for the buck.
Bring 5-10 rounds of both buck and slugs please. We are gonna have some fun.