You're right, the 30 has a mag capacity of 10.

If you want the best thing for real bears I think we're looking at a .454 Cassul or even a 12 gauge with 00 or slugs. The Raging Bull series was a real arm breaker, too.

Realistically the Glock 36 (or the 30, if you will) hides well in your trousers and is more manageable on a bike.

In Colorado it isn't that difficult to get a concealed carry permit if you don't have any priors.