Aut cum scuto aut in scuto
A .460 S&W will also work
And work well.
Always carry, but never gave it much thought till the neighbor took a 400 pound Black Bear about 400 yards from my front door a few weeks ago. I have since upgraded my "carry round the property weapon "
First use bear spray. While the Bear is working himself into a rage, kick the nearest hiker in the side of the knee. You don't have to run faster than the bear, you just have to be able to walk away faster than the other guy.