20 gauge double barrel, 20” barrels, buckshot. Loaded. Just one little thing for self-defense. The other system is secret and for someone to find out the hard way.
A 20-guage Mossberg 7-shot pump gun. The sound of the pump lever jacking in a slug is pretty threatening to a home invader, or even several of them.
No matter how much home defense is set up, if the invader does not care how much noise is made, most domiciles can be breached within a minute or so.
Just ask the FBI.
I keep all of my shotguns loaded and my highly trained doberman happy. However, for home protection and that of my neighbors, I use #6 shot. The reason is to keep the shot in the house instead of penetrating the walls of a neighbor.
I also have a psychedelic lighting and sound system that will confuse anyone that enters un-announced, especially the dope head. The dobe will have no problem with them what-so-ever!!
I have a Taurus Judge loaded up with #6 shot. The spread at 3 feet is about 3 feet.