Even an idiot can come out with good advice. Pump shotgun is a better choice for home defense though. I would only use a double barrel if I was guarding a stagecoach. Maybe that was one of Joe's early jobs.
Using a rifle inside a house for defense is a good way to kill your neighbors, especially is you're using 7.62. Save that for the longer range work.
Also if you're packing a 9mm go with the hollow points. FMJs just don't have enough stopping power.