Hmmm.
All I can say is that if you hit a deer with a 223 in the right place with the right bullet, it will die just the same as with a larger bullet.
My cousin's wife kills them every year with 55gr soft points. I use TSXs, just because, but have hundreds of Winny 64gr PowerPoints that I will switch to if my supply of TSXs ever runs out.
I do like having the tougher bullet in the smaller caliber, but really am not so sure it is needed if I do my part....
