I only use a shotgun for safe room defense. My snubby .38 or my 9mm carry go with me if I have to investigate out of the room. The experts call this a "safe room" defense. Idea is, if he breaks through that locked door, he gets shot, because I really ain't too worried about identifying him. There's enough ambient light in the room to do that since I live next to a car wash that's lit up all night. If I take the handgun to go look around, hey, I have this new fangled thing in my house called electricity and there are wall switches. All I have to do is flip one and instant light, just like that big bright thing in the sky, only scaled down.
Tactics, think about your tactics. I also am armed with a cell phone that has 911 on it. The cops will get here inside 10 minutes. If I really need a house clearing job, that's why I pay taxes, to hire professionals.
Guess what, my safe room shotgun is a 20 gauge coach gun, very same gun I use for dove hunting. Not very tacticool, is it?
I own 6 shotguns, all for hunting. Not a one holds more'n 3 rounds. Oh, my Mossberg 500 could if I'd ever taken the plug out, but I don't. It's a 28" vent rib double bead camo model I use for waterfowl, my main thing to use a shotgun for. I back up that shotgun with a revolver in the drawer next to me, anyway, itself not very tacticool. I'm just an old Fudd, not a ninja.