When I came to Alaska in the mid 60's a .44 magnum hand gun was rare and no one I knew thought they were really adequate for an irritated bear.
Bullet selection was not as good then and most knew there was a difference between hand gun hunting and stopping a charge with a hand gun.
The old "file the front sight off and it won't hurt so much when you receive it was the joke then" At some point in time this changed and hand gun cartridges kept getting bigger and bigger. Many wanted them and I wonder how many shoot them well if in a hurry.
As of late we have the 10 mm and now the 9 mm killing charging bears. Where does it all end?
I don't care who killed a bear with what ever.
I am old fashioned and want my 30-06, .338, 45-70 or 12 gauge with Brenneke slugs in my sweating hands when that situation arrives.