If all you're doing is hunting deer, a .270 Win or something in the same ballpark is
tough to beat! Ammo for it is everywhere, and with 130 grain Nosler Accubonds you'll have a low recoil, flat shooting deer rifle with bullets that expand reliably at any distance. If you're hunting in thick woods in the mountains, it's tough to beat a light lever action. Like ButchA mentions, a Savage .308 would be a good choice. If you're wanting one rifle for open country and the wooded mountains, get a light bolt action that some folks call "mountain rifles". In .260, .270, .280, or 7mm-08, they'll have light recoil, be lightweight for long hikes, and be equally at home in the woods or long shots in open country.