It wouldn't be my first choice but a bullet in the vitals with a 7mm08 would kill any bear. Obviously he did not hit the vitals if the bear was still running 2 hours later. Sounds like the bear was running at him when he fired and I would guess either a glancing shoulder shot or one in the chest that did not make it to the lungs. Either way they should get after it with heavier rifles and finish it off before it eats some innocent victim.