I haven't ever been charged, but I still think that any 22 is too small. My minimum would be a .243 in a rifle, or 20 ga slugs with the shotgun. I'm guessing that a semi auto 20 ga shotgun with high quality sabot slugs and a low power scope...maybe even a red dot scope, would be ideal. Either way, my 357 stays on my hip during all hog hunts.