Well, that was the day I had run out of ammo. The last of the polar bears was going after our sled dogs, and if he killed them, we would be stranded there forever. As he approached, I stepped in to him, and delivered the mightiest vertical butt stroke I ever swung, catching him just under the jaw. He swung one paw around, smashing the rifle, breaking the stock and bending the bolt. Stunned, he fell to all fours. I grabbed my only weapon left- my "John Wayne" P-38 C ration can opener, and slashed his carotid.
Of COURSE I can prove it- I still have the C ration opener!
Being run over is a strong likelihood-followed by being shipped by UPS. Have seen a lot of SXS shotguns with a small "ding" 2/3rds of the way down the barrel- usually cause by gun butt on the ground, gun leaning against seat, closing door on gun.