[Don W]

Would you personally carry a 9mm semi as your brown bear deterrent device in the bush, or would you go with a larger calibre?

[spetznaz]

If I was in bear country I would carry a large revolver with powerful loads (and if I had to carry a semi it would be a 10mm Glock). Why? I'd require absolute reliability, no buts, hence the revolver or the Glock, and carrying a heavy magnum load for the revolver or in 10mm for the pistol.

However, if I was more worried about two-legged less-furry critters with opposable thumbs that may be shooting back at me, I would carry a bullet that gives me a high carry capacity but is still good enough to penetrate deep enough, and with modern HP technology, is assured to expand to 0.65 (or even more in the case of the 145gr Federal HST).

That would be the 9mm.

Thus, for semis, in bear country 10mm, and in human country 9mm. Why? Because each capitalizes on its specific strengths against specific targets.