Oh ok... I didn’t know you had a basement full of kodiak bear rugs my bad.....
A good friend, who grew up in the AK bush living by the rifle thinks the 308's more than enough (he hunts Kodiak every year). Phil Shoemaker, who has more experience with Brown Bears than most, thinks it's more than enough. And friend lanche, here on the fire, thinks it's more than enough. Your problem is you've got a untested bias, not to mention a big mouth and ego...
Have used 180 fusions out of a 308 on a few moose.
Heck my wife used only one to take this brown bear at 180 yard with a 180 fusion out of 20" barrel 308. Muzzle velocity is only 2550 range, but still was one and done.
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