Run whatcha brung. I find shooting them on the ground much more satisfying with a 22 over a shotgun, less meat damage too - I've seen some pretty messed up birds with not much left to eat from close range 12ga blasts. If they flush you're boned though. I keep a single shot 12ga on the front seat of the truck when I'm in the woods, but I prefer to use the 22 if I see em from far enough away.