9mm is a poor choice for quick neutralization of a threat. Several NYS Troopers lost their lives before the department dropped the 9 and adopted a larger caliber.
A 40 cal is better and a 10mm is "more" better if you have to have a semi.
Some years ago, a fellow and his girl friend made a poor choice to walk near the Russian River late at night. Surprised a brown bear, unloaded his 40, and exited the area. The bear was found dead the next morning.
Your revolver is not a bad choice, but larger calibers are always a better choice, thinking 41 & 44 mags, or a 45 Colt with an appropriate bullet.

Imagine your grave on a windy winter night. You've been dead for 70 years.
It's been 50 since a visitor last paused at your tombstone.....
Now explain why you're in a pissy mood today.