in my state its illegal to hunt using the 223 round (except varmint). the reason for this is because of the rounds inability to provide an ethical one shot kill.. this tells you something. my state won't let me take down a 120 pound doe with a 223 cause its not a powerful enough round to guarantee a one shot kill . but my state will let me hunt with an AR-10 chambered in 308 . so its an easy decision as to which one is going to protect my home as well . a 223 is ineffective for hunting a small "naked" deer (according to the dept of wildlife) I'm sure as hell not going to depend on it for a 220 pound speed junkie andrenaline body armor wearing lunatic .
my rock river in 308 and semi auto shotgun stacked with bucks and slugs are whats in my closet. my ar 15s are in the gun safe and only taken out for the range or coyote hunting