Back when I was shark fishing a lot, I had a 12 gauge "bang stick". Often thought it could be used to "repel boarders" in a home invasion type situation. Of course, you'd have to get to within say 4 - 5 feet of the "target", but after seeing what a load of #6 shot a VERY close range did ti a big fish, I suspect punching an attacker in the chest with it would have ended a threat. Now, if you gaffed him first, probably wouldn't be "sporting".
