OK, not quite what your looking for but it's somethin'. My brother shot a grizzly with a .300 win at 30 paces. 180gr partitions loaded to the balls. The bear was faceing him and he didn't have much to shoot at so shot it just below the eye (so close the bullet hadn't climbed to the elevation of the crosshairs yet). Anyway, the bear (aged at 9 years and squared 8') was blown right over backwards and in the time it took to chamber another round (with a kliengunther bolt action) the bear was up and comin'. He shot it two more times, reloaded but didn't need more. STILL had to wait several minutes for the bear to expire. All shots were killing shots. Then, on a sheep hunt, his partner shot a large sow grizzly with a .308norma mag at about 100 yards. The bear went down got up and started comin' They shot it several times more (don't know for sure 2 or 3 likely) and the bear stopped its advance at about 15 yards distant. In his opinion, hunting a grizzly with a single shot (and this even applies to my Ruger #1 .338) is fool hardy. The problem isn't that they're made of kevlar. It seems to me that one of the largest grizzlys killed on record was killed with a .22lr. The problem is IF you don't get a good kill on the first shot, they can get ugly. Haveing a guide with a rifle is wise of course. BTW, a wounded bear doesn't immediately seek out the cause of it's trouble. They're first instinct is to run. The problem comes when the direction the bear chooses to flee happens to be your direction.