Ok Moe,
Now that the flame fest is over.
Perhaps I can answer your question to some satisfaction.
As a preface,
I have rather extensive experience with "Mr.Black" and to a lesser degree some with "MR.Grizz".
Let's just say that my education has included "BEAR" anatomy, with and extensive study of the animals skelatal,circulatory,nervous,and respiratory systems.
As well as an extensive field study of the above mentioned "UN-Friendly critters" habits and behaviors.
As a life long enthusiast of firearms, and a life long love of hunting big game in North America.
I believe I am qualified to render my opinion.
This opinion is mine and may not concurr with others, too bad!
As for the Black Bear:
You can run into him in a great variety of size's.
In the summer when young males set out looking for new territory and possible breeding partners. They are sometimes under a great deal of stress. They may have recently been trounced by a larger male and sent packing!
This situation can render these bears with injuries that may affect there ability to forage successfully for adequate naturaly available food.
This places them in a sometimes precarious position. It's at times like this when they will often wander too close to human habitation, like your campsite.
Even though they would prefer to stay unseen and undesturbed my man.
This is just one example.
They also are by nature "Fat Slobs" of oportunity.
If careless campers leave tasty smelling food around, or dumpsters aren't emptied often enough, you know what happens old greedy guts will surely make an apearance.!
And of course there is the accidental encounter in a blueberry patch, or a startled dozing bear who awakens abruptly by the intrusion of a unaware backpacker.....etc
You got the idea..,
As to responding with force to a Black Bear encounter.
We will assume that you have read "plenty" about how to survive a close encounter with a bear!
So you have waved your hands, made plenty of noise, jangled your bells, sang your songs, kept your camp clean, set your camp kitchen a reasonable distance from you main camp...etc.
And still you have made MR.or MRS. Black's acquaintance.
And He or She is pissed off at you real good!
For whatever reason a mistake the bear made or you made or by no one in particulars fault.
Youve desided to forget about pepper spray because, you have read about how alot of bears are actually atracted to the stuff because of the misguided campers who have sprayed the stuff all aroung there camp thinking it would work as a repelent.
So much for reading the instructions!
It does work.
But you gotta let them have it right in the old kisser.!
You got smack um in the old Shnozolla, and them little pig eyes for it to work.
And then only if the menacing posture or charge was a half hearted bluff.
Which I might add is often the case.
But if it's a full blown raging charge!
Forget the pepper, He's only gonna take a peek up your ass for the salt shaker!
Many times a Bear will make a false charge or two and then vear of and disapear, satisfying the bears instinctive response, and to my view their little bear ego's.
Anyway ,
It is hard to stand your ground and wait to see if the charge is just a bluff to rattle you, when you may NOT be holding some serious bear medicine in the way of a firearm.
Thought I wasn't ever going to get around to it?
So here goes:
You asked about your 9mm. as a defensive sidearm. Beacause you disqualified carrying around a 12 Gauge.
Well if you were to stuff that 9mm with a real good jacketed hollow point that holds together and pushed that puppy along real good.....lets say a CORBON 124 +P+.
You would have a margineable, but somewhat effective response firearm....."NOT" My first choice.
Your attack may come from behind, you may get knocked of your feet..etc.
All bear charges aren't head on with no obstructions between you and the bear, as is so often depicted in the movies.
A bear often runs in for attack somewhat like a "scallded dog" somewhat flat to the ground, running at an angle, with tail tucked in and head low.
Not a great shot opportunity !
They are incredibly fast, and when moving with all that hair it can be hard to tell which end is which.
Back to firearms and making the shot.
You stated a preferance for an auto pistol as your training has been along those lines.
A good stout revolver, in a much more potent calibre with a larger heavier bullet would of course be much better medicine for the bear, but you know that.
If you indeed wanted to cary a auto pistol and did not want to carry a big 45 Auto MAG. A heavy beast of a handgun.
Which you would probably leave on the bunk for no one loves toting a heavy bastard all day.
May I recommend a 10mm.
With a good handload using a top line bullet. The 10mm. is an incredible round out of a auto, combining high velocity with a large enough bullet in the 180 grain range.
GlOCK would be my choice, light,fast, and NO safety to worry about.
Study the bears anatomy.....A brain shot through the nose,eye....will drop him like a stone....if you are lucky.
A good solid hit in the lungs or heart will take the fight out of him rather quickly as well....but you must place it into his chest cavity from behind his shoulder angling forward...to reach the chest cavity being protected by his massive shoulder muscles and bone blade.
The throat or neck can be effective at extremely close quarters if you can sever his wind pipe or make a spinal hit in the neck.
This shot is often at point blank range, when the bear has closed to handshaking distance. As would a back of the skull at the base of the neck hit.
With a good bullet.
Braking down the shoulder to stop the charge and perhaps changing the bears mind, can not be overlooked either.
In all instances if you do start shooting finsh the job...don't wait to see if your shot or shots will finish him off.....as long as you can see him and he is within range keep picking a vital spot and shoot again.
Often a bear will run off to cover, only to lie wounded and re-harass you again minutes later.
But let me conclude by saying. Most black bears would rather avoid confrontation at any expense.
And will often just pop their teeth,growl a little,and make short false charges.
It can last a few seconds or a few minutes, and more than once if the bear is extremely adjutated.
But that still doesn't mean a full attack, will take place.
If the bear comes in low,quiet,and fast get ready.Your luck may be about to change for the worst.
BUT.....try to forget about what you see on TV....and realise that the articles you read in some of the more popular sporting magazines are meant to excite you, and often the author doesn't know what the heck they are talking about.
Just as some will make the same statement about this posting.
As for MR. GRIZZ......I don't care what handgun you want to tote.
You best carry a good 12G slug gun...with those full copper slugs, "PURE POISIN".
Or a good 45-70 guide gun...I don't care how heavy the bastards are. Carry it!
Brown bears aka Grizzly.....do behave differantly than blacks.
My expertise is not sufficient to make recomendations here perhaps you will do independant research on them prior to entering their domain.
I hope this helps some, please forgive the spelling mistakes, I have little time to proof this post.
WOLF