We were just hunting hog in a Louisiana WMA. During small game season, the legal weapons are a 22 rimfire or a shotgun with lead shot not exceeding BB. One guy had a 22 Magnum and shot a small hog in the chest, not recovered. The rest of us carried full choke 12 gauge shotguns with lead BBs. We all agreed that shots should be limited to 20 yards and brainshots, just behind the ear. I dont know if lead BBs will penetrate a hogs skull, but close up with a full choke, it should hit like a slug. Since we didnt shoot any hog with shotgun, we dont know which is superior.