In a closre range indoor situation a short barrel shotgun (pump or semi-auto) is probably the most deadly weapon you can have.
Fully agreed—my initial post was something of a gentle understatement. I remember some years ago in Toronto there was a bank hold-up and a teller was fatally shot in the head. The reporter noted that the robbers had been armed with a shotgun and a pistol, but that it had not yet been determined which weapon had fired the fatal shot. Obviously the people involved were not familiar with the weapons involved as an answer to the question “does the teller still have a head” will also answer the question as to which weapon was used.