Over/Unders, Doubles, Pumps, Semis, Home Defense.
It would seem to me that such a short barrel as a Shockwave or TAC (12ga) would have an horrendous blast. Is that borne out by user experience? I was thinking of one but, in range shooting or police training I would expect the shooter would use earmuffs. In an emergency - this would be an emergency defense gun - donning all the gear is not likely.