No offense, but you may want to rethink that. What I have seen from shooting one, and from other info, is that at inside house ranges, the shotgun load might as well be solid.
There is no "spray". Even the old timers that tried to crate that with the Blunderbuss found the shot just plain refused to "spray". Oh well, there are always grenades for those encounters that you do not have time to aim. You still have to aim the damn thing, shotgun or handgun.
A flame thrower now, that is a different animal from my one experience firing one. Just be sure you are on the right side of the damn thing, and God help your house.........But "spray" you do have.
Crate = create........... spell check does not catch fat fingers that come up with valid but out of place words.
All I have ever fired is a long range rifle...only good for hunting and military combat. So I will defer to your knowledge of shot guns. But I keep reading how the buckshot from a shotgun does not need accurate aiming.
Even more important than a gun in the house is a good dog who barks loudly at any strange noise. That gives you heads up time to get out of bed and get the gun ready. Last thing I would want is to be surprised by an intruder, especially if I was a lone female in the house.
Have you seen the Breath Of The Dragon 12ga. shotgun rounds?
http://www.youtube.com/watch?v=RP4FjODPDFA