I use a 12 ga pump for in the house and an M1A carbine with a 30 round magazine for outside. I have a handgun in the bedroom for my wife to grab as she heads to the bathroom as a last ditch sanctuary since there is only one door in and it can be locked. She has been trained in the army and will dump a magazine through the door if someone tries to force their way in.

Very few people have the skills to effectively use a handgun in a high stress environment. Anyone that has been in combat will agree with that. If you are serious about protecting yourself and your loved ones, use something other than a handgun as the primary weapon.