Moving to AK??

[Drilling Man]

personally I'm not in a position to afford a double rifle,  cost of 10k plus and limited in use to strickly dangerous game at close range, 

  10K??  You can buy a Valmet O/U 412 DR for less than 2K, and the EXCELENT Chapuis S&S DR is under 5K.  Both can be had in 9.3x74R, and that's EXCELENT big game medicine, including for big bears.

  I have no problem with over 200 yard shots on any big game with my DR, and with more practise 300 will be no problem.

  DM

[BBF]

I'm as slow as molasses when itcomes to reload a bolt action
In my case for Alaska it would be a lever rifle, pump or auto banger in that order.

[Sourdough]

I carry a single shot Handi in 30-06 all summer in Grizzly country.  My wife carries a Remington 7400 semi-auto in 30-06.  We both carry 180gr Nosler Partitions. 

The only charging Grizz I have had to shoot was with a .35Whelen in a Mauser action.  One shot had to do, if first shot had not taken it out there would not have been time for a second with a bolt action.  The 225gr Nosler Partition did the job.

[Greenhunter]

The Browning BAR is probably the fastest .300 and .338 mags on the market. After that I would take the Savage model 116 w/ adj. muz brake. in either caliber.
The Browning may be problematic in super cold weather if you don't switch lubricants.
 

[Dand]

You are very correct on the lubricants.  It was only 0 a couple weeks ago when I was out.  Somehow I let too much oil into the bolt I guess.  I could not close the bolt on my ammo - the exact same ammo I have been running thru the action all fall without finding anything to shoot.  I could close the bolt on an empty chamber so snapped the trigger. After that I could chamber the ammo.  I have since dried out the bolt more.  I might have had some snow or condensation somewhere in the chamber or bolt too but couldn't see it.

A lot of folks carry a light pump 12 ga with slugs for bear concerns. They seem to withstand bad weather and crud very well, are pretty light and very reliable and relatively inexpensive.

I have 2 friends who have dumped charging bears with bolt guns. One had the gun knocked out of his hands at the shot.  He carried a Win M 70 .338 shot from the hip. The other had a Weatherby Vanguard 30-06 the 2 times he was charged. Deflected one bear, enough for a second shot, dumped another with the first shot at 20 yds I think.

Both guys were very handy with their rifles.