Another point to be made for the shotgun is it will not overpenetrate through walls with 00 Buck. The last thing I would want are rounds zipping through the house.
I think 00 buck would handily penetrate the interior walls of my house, but then I have good reason to know how flimsy they are.
BTW, and just for folks' reading pleasure, a LEO of my acquaintence recently examined several interior walls of an apartment building after a drug dealer let off a single round of 7.62x39 FMJ at another drug dealer. The bullet missed the intended miscreant, penetrated a wall, entered the apartment across the hallway, passed harmlessly over the recumbant form of a baby sleeping in its crib, exited through a window pane and then he lost track of it after that.
