My Dad blew ones lungs all over a berry patch with 160 Partitions in his 7RSAUM a few years ago. He put one through the chest from each side and the bear made it maybe 25 yards.

Wasn't a huge bear, 7' inland grizzly, but dead from a well placed shot with what is arguably not even a magnum 7mm.

Know a guy who has a grizzly in the record books he killed with a 308 and I think CoreLokts. Another fellow who killed a 9'er with one chest shot from his 16" barreled 30/30 with a factory Silvertip.

They can be hard to kill at times but in the end they are made of blood and organs like anything else. Make a good first shot and prepare for sticker shock when you hear what they're charging to make a rug these days.