I wouldn't use buckshot, the tungsten Federal Heavyweight BB Coyote Load would be my choice. Use a non-wad stripping choke and hit the pattern range and tell us how it performed for you. That is the only way to know how it'll shoot from your barrel and chokes. I sure wouldn't doubt its performance on game, tungsten BB's tear 'em up and that Federal load is the densest of all the factory loads as far as I know.