Motracicletraficificker said:
Anyone know of, or heard of, anybody effectively discharging a handgun to fend off a charging /attacking bear (black or grizz)?
Yes but it is not common. Guns in general are not particlarly effective on grizzlies, especially for defense. Generally if someone effectively used a handgun it worked because they scared the bear off, not because they dropped it.
For reference, I lived there three years and spent 2-4 weeks a summer for another decade. I have spent a LOT of time in the woods and waters of Alaska
When I lived in Alaska it was easy to tell the tourists from the locals. The tourists would all have these fancy big revolvers or whatever in all kinds of cool holsters. The locals had bear spray.
Don't get me wrong, we carried guns. I carried a 629 that is still keep loaded in my gun safe(with 44 special). We also had a Mosin Nagant Carbine that spent many nights in camp and lived in my garage when home. Some of my buddies carried various revolvers/pistols and some didn't. But EVERYONE carried bear spray. It was much more likely to use a gun on a moose than a bear.
I would often go in the woods without a gun, but never went without bear spray.
The OP is using bears as an excuse to buy a gun. And that's great. That's why I bought my 629. And he is dealing with Colorado black bears which is totally difference. But hopefully the OP is just using it as an excuse to buy and not going to really rely on it.