RE: Which caliber would you pick?
I'd also go with the 308. Low recoil, factory loads are plentiful and easy to find. If you're wanting a bolt, go with the Ruger MK II Compact or Rem model 7. If you're not set on a bolt, go with the T/C Encore or G2. If you decide to go after bigger game, its just a matter of getting another barrel instead of shelling out big cash for a whole new rifle.