If those are what your only going to consider than the .220 or .22-250.IMO. If you want to open your choices to a broader range of calibers than you could easyly go with any thing like the .220 swift, .221 fireball, .222, the new .204 ruger, .223, .22-250, .243, .25-06, or one of many other calaibers. I would personally go with the .22-250 or the new .204 because there is alot of options between the two.