I know the feeling. I’ve seen a bear so big that had I not been inside a cabin, it might have got my knees knocking. He was standing on the back side of the meat shack on two legs (and much taller than the shed) pulling deer heads off the roof. When my partner shone his powerful light in its eyes from the window, it didn’t like it. It shook its head back and forth and roared. I was screaming at Paul to turn the d****d light off......but I didn’t like the darkness any better with that monster outside that flimsy cabin.........
Glock 20SF shooting 180gr. Hornady HP. It will do the Trick, Although a Man I know who had a Big Squatch Cross the Road in front of his Peterbilt, said it wouldn't be enough gun. With 14+1 shots, I Beg to Differ. Using Advantage Competition Sights, I Hit Where I Aim. I Have Shot a 45, it will also pack a Wallop, But I prefer the 10mm. Don't get the impression that I would shoot a Squatch, Unless it wanted to get too friendly.
Lots of Alaskan guides and outdoorsmen have gone with the Glock 20 as their sidearm.
There is currently a significant shift in attitudes regarding handgun defense against bears, including BIG bears.
https://www.ammoland.com/2018/02/defense-against-bears-with-pistols-97-success-rate-37-incidents-by-caliber/#axzz5R5o1ckGT
Here’s an interesting recent case of an Alaskan guide killing a coastal brown bear with his 9mm (why he’s marching clients through the brush with a 9 mm on his side is beyond me).
https://www.americanhunter.org/articles/2016/8/10/alaska-outfitter-defends-fishermen-from-raging-grizzly-with-9mm-pistol/
Apparently, non-hollow point ammo, either hardcast or FMJ, is key in order to gain maximum penetration through heavy bone and solid muscle, but that shouldn’t be a surprising new fact. I’ve always loaded lead nosed FMJ ammo in my outdoors sidearms. Frankly, I’m still of the attitude that my sidearm is for fighting my way back to my rifle, which I never should have left behind to begin with. I prefer my 16” Marlin 336 in 30-30 over my Glock 20..........any day.