I have to agree with General Goeff on .308 vs. .223. Here, you're sort of once again getting into a caliber war, although it's .308 vs. .223 instead of .45 vs. 9mm. However, it is a bit different, because the .308 actually does offer a bigger wound tract. Personally, I'd rather have lighter recoil. If there are multiple assailants, I want to switch faster, and the .223 will allow me to do that easier. This is once I get a rifle, of course. For now, I have a shotgun, and that does the job just fine.