Originally Posted by SSGN_Doc
Plus you don't have to use FMJ in your house. A 50 gr HP or soft point will fragment at even lower velocities.
Shooting anything in your house is dangerous, period. Any ammo that will penetrate deep enough into a human to stop them will penetrate wall board and still be dangerous on the other side. Pick something you can hit with. Pick something that hits a bad guy hard and dumps it's enrgy into them. But it must penetrate to get to vital organs and create significant blood loss. If the round you use does this. it will be dangerous to anyone in the house. if there is only one or two walls between them.
Dawg, Check this site:http://theboxotruth.com/docs/theboxotruth.htm
He's a retired cop, and has doen a lot of testing.
A fast light fragmenting bullet is safer than a heavy one that stays in one piece and keeps trucking.
Bottom line is drywall doesn't stop much, even pistol rounds. Most will penetrate 6 walls completely.
I agree that the next room wont be a safe place, but you need to think about others also. A slow moving handgun bullet or buckshot probably wont have the velocity, trajectory or energy to go thru an exterior wall, across the street and thru another exterior wall and kill someone like a rifle round would. I think you are right about fragmentation bullets but a handgun with frag bullets would be a better platform. I've shot thru 1/8" steal plates with .223 JHP bullets, don't count on that bullet doing as advertised.
Fact is, if that stray bullet kills someone other then the bad guy, you will be responsible for their death and right or wrong the 12 people that judge you are going to view your AR with all the attached toys as pure evil and you as a careless trigger happy anti-government outlaw. Your far better off killing the bad guy with dads .38 or a non tactical shotgun.