RE: New Rifle
If money is no object buy the Sako 75, it probably has the best action in the business right now. If money is an object take the Tikka, there usually cheaper than the other two. Overall, the medium would be the Browning A-Bolt. I would be proud to own any of the three listed. As for the caliber choice, check the ballistic tables and the cost of ammo. My 2 cents.