25.06 with the right bullets is good out to 400 yards. Also many other rounds that are flat shooting and good to the same distance with some holding thier energy to further distances. First you sound determine the furthest distance you would likely need than study the ballistic tables for bullet drop & retained energy at that range. Also you might want to keep in mind that you may also want the rifle to do double duty on larger or smaller game and choose a caliber that is capable to also suit this need.

Best Wishes