Originally posted by Pilgrum
Even a standard brick wall doesn't give much defense against high velocity ammo so unless your door is 1/2" solid steel, the safest place to be is in an underground bunker.
Originally posted by PaddyInf
reply to post by GoodOlDave
5.56mm DOES punch through car doors easily, or at least SS109 does. It has a steel penetrator core that is specifically designed for this purpose. Admittedly the jacket tends to strip from the round when passing through, reducing the effectiveness, but it will still kill. Part of my job used to be practicing engaging targets in vehicles with 5.56mm weapons so I have a bit of an idea about this.