The “authorities” prefer you carry bear spray for a charging bear. I carry a 44 SBH all the time when fishing, and a 50 S&W when hiking around. But people should carry the most powerful caliber/load that they feel comfortable shooting. As stated in the article, warning shots (or misses) didnt stop the bear.
BTW..Im a couple dozen miles west of the Yaak River. Grizzly country.