I am thinking about looking for a good long range hunting rifle

i wont something that will drive tacks at anywhere from 400 to 600 yards or more if possible

I would prefer something that has a well know well used round so ammo would be reasonably since cheap is no longer a option with the prices. but more so i wont accuracy.
something under 1000 but hopefully closer to 700 or so with out a scope

What gun model and caliber should i go with