There are lots of choices out there. Several guys I hunt with use the Winchester 3.5" High Velocity 00 buckshot. I've tried it when I used a 3.5" gun but preferred the way the 3" 000 Winchester buckshot shot and also the Federal Flight Control stuff. Several of them have switched to the Federal Flight Control stuff. I just don't see the advantage to 3.5" shells for buckshot. It's never shot as well when I've tried it and it kicks way too hard.