Cocking ONE hammer isn't an issue. I learned to hunt with an old hammer Stevens single shot. The problem, as noted above, is trying to cock BOTH once a bird's in the air. With something like a 12ga in particular, you'd probably need a hand like a gorilla. No, make that an NBA center, since a gorilla doesn't have an opposable thumb. Cocking both when the dog goes on point is a decent idea . . . but it means that guys with hammerguns had better be hunting with pointing dogs--which, of course, is a good idea anyhow.
