I'm gonna throw a monkey in the wrench, and recommend the .22-250. In a .223, you're going to get good accuracy, but not as well as the .22-250, also, you're going to save money on ammunition, only problem is, the ammo you save money with is surplus stuff that you don't really want to shoot in a good rifle (it's fine for M-16 knockoffs), and it isn't very accurate, nor very clean. Look at .223's around at shops that have been used, you can always tell the ones that have shot a lot of cheap ammo, not only do they have excessive gap burn on the bolt face (more than that number of rounds should have given), but usually also have red or green crap burned into the pitting, which is really difficult to remove without further damaging the bolt face. (imperfections on the bolt face will decrease accuracy). The .22-250 was developed as a target round, and is extremely accurate in and of itself, and because of this, bullets have been manufactured that have allowed the .22-250 to become the foremost sold varminter today.

Screw the 10 ring, keep them in the zero!!!