I haven't shot any grizzlies with the Nosler Partition, though did use the even "lousier" AccuBond with great results.
However, I have shot a number of elk with the 200-grain Partition--and an elk is about the size of an inland grizzly. The cartridges ranged from the .30-06 to the .300 Weatherby. Only one bullet stayed inside any of the elk, from a "raking shot" at 375 yards that happened to clip one side of the pelvis before ending up in the front of the chest.
One 6-point bull was shot at 75 yards quartering toward me, right in the big shoulder joint. The bullet went through the joint and the important plumbing behind it, then exited toward the rear of the rib cage.
