I pack a 10mm in grizzly country. I have 3 of them now, a Sig 220, Sig Tacops 1911, and a Glock 20. The Glock and 1911 both needed a trip to the gunsmith to be reliable with hardcast ammo. All functioned perfectly with all the 180gr FMJ range ammo, or 180gr JHP ammo I tried. It was just the...