FLAT,
My 2 cents is to go to a gun shop and try the trigger (if they will let you) and dry fire some pistols and see how they feel in you hand. Grip size and shape can be quite different from on pistol to the next.
Once you find a gun you like the feel of and how the trigger feels, then see if it is returnable to the store if it does not work for you. Most stores will say no to this or offer you a fraction of your purchase price.
So you may want to call around and see what guns are available to rent at local ranges.. You may love a GLOCK 19 in 9m.m. or hate it. Same for a 10 m.m. pistol, a .40 S&W or a .45ACP.
Right now, I am wearing a GLOCK 19 9m.m. pistol. It is my agency duty gun and I do not have any choice in the matter. I can qualify with it, but shoot better with my BERETTA M9A3 pistol or SIG 226 or 229.
The M9A3, which has the VERTEC style grip is the BERETTA 92 model with the straighter grip as also used on the 92X models. I find that I prefer that straighter grip as the smaller circumference of the grip makes it easier for me to pull the trigger.
My brother, who is one inch taller, prefers the traditional, rounder 92F/M9A1 style grip, so it can be a small difference that makes the gun fit you.
If you go with an auto, but want a larger caliber, I strongly suggest you try that caliber first and in the gun you want to buy.
I carried a .40 caliber S&W as a duty gun for 20 years and we eventually dropped the .40 caliber because it was too hard to get officers qualified with it.
We started with a large pistol, the BERETTA 96 in .40 and while I found them easy to shoot, reliable and very accurate, plain clothes officers thought they were too big and some officers had trouble with the large grip. We also found that the very powerful ammo we used wore out the guns in 10 years. Smaller guns will be easier to carry and conceal, but may have unacceptable recoil.
If you go to a 10 m.m. the gun will be larger, usually and the recoil heavier.
The same goes for the .45ACP. Easy to shoot in a 1911 that weighs 2 and a half pounds, but maybe more than you want to lug around on your belt.
It is always a trade off for portability, power and controllability.
Another option is the .357 magnum. You can get .38 Special size guns chambered in .357 magnum without going to the heavier intermediate size guns like the S&W 586/686 L-frame guns or the COLT Python or RUGER GP-100. These last guns are heavier and bulkier. I have carried them on duty and prefer mid size guns like the old RUGER Security Six revolvers. These guns were similar in size, weight and bulk to the S&W K-frames, but stronger. You may also consider a S&W model 19 or the model 66, which is a stainless steel version of the model 19. They are both mid sized and chambered for the .357 round, but my experience with them is that they lack the strength of the RUGER Security Six.
I would alway go for at least a 4 inch barrel.
If I were going to choose a bear gun for the woods, I think it would be my BERETTA 96 Brigadier in .40 S&W with the very capable FEDERAL 180 grain HST ammo that my agency used to issue or a .357 magnum revolver with REMINGTON 158 grain sjhp ammo. This ammo will expand from a 4 inch barrel, but penetrate deeper than the 125 grain ammo used by police with great success. My revolver would be either my old blue RUGER Security Six with a 4 inch barrel and PACHMAYR Gripper grips or my S&W 681 with 4 inch barrel and HOGUE grips. Both have great triggers and shoot really well.
Jim