Below are the specs for the Remington Model 700™ Alaskan Ti. That may be the perfect rifle for the high hunt. As far as cartridge selection goes, I'd probably go with a short action cartridge to reduce the weight; and not a magnum because the recoil would be too much in that light of a rifle; so the choice would be the 7mm08.
_________________________________________________________________________
Model 700™ Alaskan Ti
We know the high country demands high standards, that’s why we’ve built the all-new, amazingly light Model 700™ Alaskan Ti. Weighing only 6 1⁄4 pounds long action and 6 pounds short action – it’s the ultimate rifle for high-altitude spot-and-stalk hunting.
The key to its lightweight feel starts with a titanium receiver that’s impervious to weather (drilled and tapped for mounts) incredibly strong, and half the weight of steel. Complementing the super-light receiver is a bolt featuring spiral-cut flutes and a 24" magnum contour barrel with light-varmint-style fluting. The action is pillar bedded for outstanding shot-to-shot consistency. Its premium Bell & Carlson stock features their MaxxGuard finish for enhanced durability and R3® recoil pad.
25-06 Remington 24" 6 1/4 #
270 Win 24" 6 1/4 #
270 WSM 24" 6 #
280 Remington 24" 6 1/4#
7mm-08 Remington 24" 6 #
7mm Remington Mag 24" 6 1/4 #
30-06 Springfield 24" 6 1/4#
300 Win Mag 24" 6 1/4#
300 WSM 24" 6 #