Let me start by saying that the 223/.556 is to much and to little. It is to much for smaller fur barring animals (lynx,fox rabbits etc.) If you want to save the hide.And in my opinion to small for moose,caribou,bear,sheep.
And the 300 blackout for me is to much like the 7.62x39 it's not worth the expense But who knows what might happen.
Erich
