First, all 3 calibers you listed are very good. The 300WSM is overkill on sheep and deer. The same is true for 30-06. For a one gun battery the 300WSM is the ticket as it can be bought in a lighter rifle than the 30-06 depending on the manufacturer. That all being said, the 7-08 is your clear choice here. A true short action design which can be purchased in a wide variety of makes and models. Clearly it should be something to handle the Alaskan weather - synthetic and stainless. A wide variety of ammo, from premium to standard cup and core can be purchased. If you are a hand loader you can tailor make your ammo easily.
Personally I like Kimber Montanas and they appear to have tuned up their quality control. The Kimber comes out of the box at 5# 2 oz. and has many custom features for the near $1100 price tag. For a lower cost alternative don't overlook the Tikka T3 Lite ($625) and the upgrade model - the Sako A7 ($700-800). These last two weigh in at 6# 3 oz..
A 7-08 with the correct bullet and proper placement will handle everything in North America exclusive of Brown Bear. Think of it as a .280 on a diet. Keep us posted as to your decision.
Personally I like Kimber Montanas and they appear to have tuned up their quality control. The Kimber comes out of the box at 5# 2 oz. and has many custom features for the near $1100 price tag. For a lower cost alternative don't overlook the Tikka T3 Lite ($625) and the upgrade model - the Sako A7 ($700-800). These last two weigh in at 6# 3 oz..
A 7-08 with the correct bullet and proper placement will handle everything in North America exclusive of Brown Bear. Think of it as a .280 on a diet. Keep us posted as to your decision.