Yipper, I have a Mossberg 500 12ga pump. Holds 8 rounds and makes a lot of noise. Came with 18.5 inch and 28 inch barrels plus a standard stock and a pistol grip. Not a bad weapon for about 250 bucks back in 1990.
My opinion is.... a shotgun is WAY too big to turn around corners in a house.... if you dont have any really small halls or anything like that then a 12 or 16 gauge with bird shot... just for the pure scatter factor.... then a 00 buck shot right behind that