# depending on the gun it is entirely possible. certainly if it was not a .357 or 44 mag it would not likely penetrate a large griz skull even at close range. i've seen studies that indicate this. a 12 guage slug does not penetrate the skull but crushes it. those tests were done on confiscated bear skulls by AKF&G. what is not likely is being treed by a grizzly, he would have been caught. #2 a large kodiak would have little trouble flipping a jeep, but it's hard to believe it would not have just flipped it and grabbed the guy. I saw a video made by the park service when they were designing bear proof containers for parks. At one point they used old cars and as long as a griz could get its claws into the crack where the door met the car it popped the door right off with no problem. when they could not they often turned the car over in frustration, breaking windows was not enough fun for them. even when a seamless type container was developed the bears often turned the things over. these were not kodiaks but montana and wyoming grizzlies (pups compared to kodiaks) luckily kodiaks are much less aggressive than montana grizzlies. again, when i really thought there was significant risk of bear trouble i carried a double barrell with various combinations of loads. i had a buddy who swore by his 44 mag for years but when we had to exit a tent with a bear outside one night and my sleeping bag zipper jammed so he was first out, he grabbed the shotgun and i ended up scaring the bear off with his pistol. he always carried a shotgun after that.:hmmm: any gun makes an effective noisemaker and might just be better in that role whether you're talking about bears or tweakers.