As long as you put the bullet where it needs to go (not a headshot) and you only take broadside shots, 223 will do just fine. A Barnes TSX in 55, 62 or 70gr depending on you barrels twist rate will do great. The Federal Fusion and Winchester PowerPoint are also supposed to be good ones.
Here's a good thread about the subject - 223- Deer Hunting Rounds - Page 1 - AR15.COM
Last edited by WisconsinDeer; 12-06-2012 at 10:28 PM.