If you have never taken a 223 loaded with a premium bullet designed by the manufactuer for deer then you don't know what you are talking about. Like I said before...contact Barnes, Sierra, Nosler and ask them what there bullets are designed for....now that is just the the various grained Barnes X, Sierra 65 gr Gameking, and the Nosler 60 gr Partition. Keep using your magnums that are just blowing a hole straight thru the deer and keep telling yourself you need it to kill a whitetail deer. And if your magnum, 270, 30 snot 6 is going off like a grenade inside of the deer you need to find a different bullet because what if you have to shoot a deer length ways??? Are you confident your bullet is still going to pass all the way through? All of my deer rifles do it including my 223. All of which on broadside shots are not that impressive....tiny hole in....quarter/fifty cent piece exit anything more is bullet failure. I can take any of my deer rifles and shoot him in rear splitting the hind quarters and my bullets will exit the chest...... 223 included... Back to the point....all the people knocking the 223 have never tried it....plain and simple.....keep to your big guns apperently you need em...........