Because I'm not as competent with a handgun as I'd like to be, my go-to home defense weapon is a Benelli M4 with #4 buck. A couple of comments I think are called for at this point. First, I've heard it said that an advantage of the shotgun for home defense is you don't have to aim. That is complete BS. Only a very inexperienced shooter would say something that wrong. Second is the notion that when the intruder hears you rack the slide on the old 870 he flees in fear. Maybe not. In that case, giving away your position and that you are armed is complete nonsense that could be fatal. Third, after I've identified my "target" as an immediate threat and absolutely not something else, there will be no warnings. I will shoot to stop the threat and will continue shooting until there is no longer a threat.