For grizzlies in AK the Game Wardens carry then 45.70. Great rifle for knockdown power, lightweight and short overall length.
"Marlin 1895 Guide Lever Action Rifle .45-70 Government 18.5 Stainless Steel Barrel 4 rounds Walnut Stock Buckhorn Sights The venerable big game dropping performance of the 45 70 Government. is now available in a compact gun that weighs only 7 lbs. It features an 18 barrel and a straight-grip stock for fast pointing. For corrosion resistance our Model 1895GS has all major metal parts machined from stainless steel."