Scott @ Reloadable shells has a 10/22 hornets nest out. I have his cannon & a 4X.410 CannonJust buy the reloadable shells 'cannon' round and load your own buckshot loads. That's my plan. There's tons of volume, but weight is limited if you want lethal velocity so I plan on experimenting with steel shot. Made in China ball bearings are cheap if you use common sizes.