If you really want to piss off an emergency room Dr use #6 shot. They will tell you they can't remove all of it, too many pieces. And before you say they are too small think about this. Because none will exit the body you just got hit with a 1 & 1/8 oz or 1&1/4 oz pile of lead at 1100 FPS and got to enjoy all the kinetic energy. It converts flesh to hamburger. Sure it'll go thru a couple of interior walls but that brick on the outside will stop it.
Just food for thought for all the "What if" folks
terrible advice. to stop a threat, you need penetration, more penetration than even #4 buck fails to consistently provide.
you can't have your cake and eat it too, anything capable of reliably stopping an attacker will go through a lot of drywall.