.308 7/08 .270 will all do the job and ammo is readily available in many price ranges.
The two biggest selling guns for me are the tikka t3 lite and the remmington 700sps. The tikka has a magazine the Rem has a hinged floor plate instead some other differences but thats the main one.
Best thing is to go to your local shop and put some guns up to your shoulder and see what feels best to YOU as fit and feel mean a lot.
Scope wise the more you can spend normally the better . I am a big fan of the bushnall elite's .A 3 x 9 x40 retails for @500 and is a really nice scope.
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