I am surprised no one is using AR-10 for big game hunting Alaska. I now mostly carry an AR-10 with 12.5" barrel chambered in .308 Winchester.
I guess with the AR-10, a heavy rifle, one would have to empty the magazine on a big brown bear.
I've always read a bigger caliber was best for a big fat bear. The reason was that there was so much fat on one, as well as muscle, that the bear wouldn't show a good blood trail if you had to find him. A big hole would open up the wound and he would bleed out quicker. That is/was the reasoning for a minimum 375 in most African countries. I would suppose it would be the same for Alaska, especially with the big bears.
I've never been to Alaska, but if I did, I would take my minimum 35 Whelen. Or I would buy a new Ruger 375 or 416, since they are lighter for all day carry and have standard length bolts. Otherwise it would be a 375 H&H, or 416 Rigby.
The 9.3x62 might also be a good one.
