Bruce,
Aren't you glad you started this?
Once hunted musk ox with an Inuit from one of the islands in the Arctic Ocean, and he was a firm believer in anything MAGNUM, because he used a .22 Winchester Rimfire Magnum on polar bears, and had never taken more than one shot to kill a bear, and never lost a bear either.
Which is why I would much prefer the .222 MAGNUM....