I recommend a Leupold 2X-7X or 2.5X-8X scope for caribou hunting, and a 140-grain Nosler Partition jacket bullet loaded to as fast as you can safely get it to go and still preserve adequate accuracy! Work up your load in that particular rifle!! The rest of the answers above seem to indicate that the folks missed the fact that you will be handloading for this rifle, which gives you a big advantage over people who have to use factory 7mm Mag. ammo, which has been "wimp-ized" to the extent that it is no better than some good 7X57mm Mauser loads! Your rifle may permit you to better this performance, perhaps by a wide margin! Mine does! However, yours may NOT, so work up loads 1/2 grain at a time, and use slow powders like H 4831, IMR 7828, and RE 22.