If you are looking for more of a do all. You can't beat a 6x45 in a 10 twist.

55 gr BT / sp at same or better velocity than .223 and you can shoot all the way up to 85 gr Sierra Hp's or 87 gr Burgers with no issues.
Brass is easy dies are cheap

I had. 6 TCU at one time thinking on converting one of my .223 rifles to 6x45

Last edited by H2OBUG; 02/20/2015 1:52 AM.
If it jams force it! If it breaks it needed replacing anyway.