Look a bunch over at a shop, find one you like, and go with it. Almost difficult these days to find a really bad new rifle(contrary to what some people would have you believe), personally, I'm a big Mauser 98 fan, as far as new rifles go, I have a Winchester M70 that I am quite fond of.
For what you described, I'd go with a 22-250 or maybe a .243. The current trendy answer would be (just threw up in my mouth a little bit) one of the Creedmoor's 6.5 or 6.
