RE: What caliber for an Autoloader??
The .40 Short & Weak? If you're thinking about moving down to a .40 caliber for bears and you're looking at Glocks, I'd look closely at the 10mm. Unfortunately, ammo is a bit more pricey, but, it's a better performer than the .40 S&W (and more potent than the .45 acp as well...).