I carry a 10mm with cast bullets, weight is the issue and a 10 will do the job
The Hornady 180 grain 10mm, XTP driven fast, is also, a "Good" Bullet as it, Expands to about 50% Bigger and it, will still Penetrate, deeply into, a big Bears, Skull ( Fudge those, Body Shots !! ) SADLY, I could not shoot One, "Well enough" due to Old, Flinching problems, so Sold it and I will only go into Grizz Country now with, a good Sized caliber, Rifle. I've "stared down" and Shooed away, a couple of Blackie's, in Elk Country with, my Glock, Mod 19 loaded with, Hot, 147 grain, XTP's in One Hand, Bow in the other hand ( held High ) and, Yelling / Growling, back at them ( Yup it works,.. on Blackies ! ).
I DID however, "feel much better" with the bigger Glock 20, 10 MM, on my Hip, tho,.. BEFORE,.. the M-19 !