I'm thinking a .22 should be fine but my brother recommends a .30/30! I think that's overkill. We're not trying to get shots at 450 yd over hills just smoking them out from under a barn and putting one between the eyes at close range. Of course that close I want it to die and not get pissed and charge me! Sounds silly and I know it's not a boar but those little buggers can be quite mean.