Did you ever think that 300RUM put that bullet through the animal so fast that it didn't expand to do anything more that what the .223 did? You guys are unreal in that it's like you know nothing about ft/lbs of energy and using the proper caliber/bullet to take an animal as quickly as possible. Sure the small caliber will kill and sometimes pretty quick, but why do you think that the majority of states require certain minimum calibers for shooting various big game? Next thing we'll be hearing from fritz1 and others is that the .223 is fine for elk and big bears, LOL!