AR-15 absolutely the best for 2 legged predators. More capacity, better at penetrating heavy clothing or even pistol rated armor (which shotgun has no hope to defeat). Less over penetration into the neighboring rooms or houses.
Discussion
That last point is what I had always thought made shotgun a better option for a home defense situation -- less over penetration.
Assuming it's a stray shot, not one that already went through the threat, doesn't an AR-15 penetrate walls much more easily?
Where I live (the Soviet Euro Union), ironically, having a *less* deadly option is a real consideration. Shit is bad enough if you dare use your legal gun to defend your home (which is illegal in all cases where I live).
No, because shotgun slugs (or even buckshot) are so much heavier than a .556 bullet. The tiny .556 bullet tends to tumble when encountering light barriers like drywall and wood. Large, heavy slugs, even if they tumble, have a shape and mass that continues in the same direction. Look at the shape of bullets designed for elephant hunting - they are very similar in shape to shotgun slugs, and are designed to penetrate very thick (many cm) of bone to reach the brain, in a straight line.
If there isn’t any legal deadly force, I would have a plan to dispose of the body. Difficult if there are witnesses, so maybe a 300 blackout with a can, instead of .556. Much more difficult if you live in a densely populated area - if that was the legal reality where I live, I would probably move somewhere with a little more land and privacy.
AK or big game hunting rifle better against armor than both of these options
AK for home defense. Why the hell not.
I love AKs, however…
It’s almost a lost cause to mount optics, IR, light, or any other accessories than a bayonet…🤣