Buckshot in the house will easily penetrate sheet rock and go into rooms you may not want it too. Bird shot is fine close up. I have a AR style12 gauge. It doesnt cycle as well with low brass loads but will shoot high brass as fast as you can pull the trigger.
with the apartment i worked in/around . buckshot wont be much of a problem depending on the layout of the building some building youd be ok some not so much . multi foor complexes be the hard ones , you have people living on three sides of you so no matter how youll be shooting you'll shooting towards some body . .
thing is with apartments you got to make it as hard as possible to get in . if you gotta shot some body you wanna do it as they come in not coming down the hall way or in your bedroom .
its just some thing that has to planed and thought out .
