I went to the 41 Magnum side of the force back in the 70s. I had a Rugger 44 Magnum, then a S&W but I fell head over heels for the 41 magnum and can't say why, its just suited me.
How effective will be this against black bears/grizzlies? Thanks
In the case of bears a gun is a tool. It would be effective against a black bear but so would a 357 and even a 38.
But, generally black bears are not hard critters to kill and then generally do not attack outright. Just a bang might be enough to run one off (keeping in mind habituated black bears are truly dangerous and you have to take that into account.
As for Grizzly, I carried the 41 on my into the woods fishing trips but I was under no notion that it was a good go to option. Purely noise as where I fished there were not habituated bears (either type).
I carried two complete sets of reloads and I would climb a tree to avoid a Grizzly and only shoot one from there and I was clearly stuck there (yes I might well not have made it to the tree or up the tree).
I have seen Grizzlies move and they are insanely fast. The Fridge of Chicago Bears fame was slow compared to how fast a Griz can and does move.
Being in Alaska I have always followed the wisdom closely on dealing with bears. My weapon of choice was a Semi Auto Shotgun with 4 double O buck and one slug.
I now of no sudden encounters that the guy with a gun no matter how prepared he (never knew a woman to be in that position) or she was, the bear was on them before they got a shot off.
Sight distances of course matter. Best view I got of a Grizzly was an open mountain meadow alongside a road as I was putting along slowly on my motorcycle (long story).
It stood up, took one look at me, whirled and was half way across the meadow before I could have spit.
The best tool for a Grizzly is bear spray. Proven over and over again.
And I know of one case where the guy had bear spray but it was in its holster and the bear was on him before he could get it out. At that point he just curled up and took his beating and fortunately the bear then ran off (fairly typical for a Grizzly encounter)
And that is where you have to play the odds, occasionally there is a truly predatory Grizzly and you are done for. If you can reach it the bear spray is your best chance.
I know of one reported case where a group of 5 hunters (Caribou out in Western Alaska) were headed back to camp and were taking a break on top of a knoll.
One of them looked back and a Grizzly was coming up the hill full speed. Ok, this is not a chance encounter at close quarters and its time to start shooting.
the 5 of them were experienced hunters and realized what they were dealing with, spread out and started shooting. They all had different cartridge files but all were 30-06 on up to 375 HH, almost all the shots hit and the bear died 5 feet in front of them. That what it took to put down a Grizzly coming after them.
they back traced the route and found where the bear had come across their trail and then had followed it for several miles. Clearly predatory.
Sans good circumstances like they had, you are toast.
My guess is a full on charging Grizzly that is after you would take a 20mm cannon to stop in its tracks. My take (passed onto me) with the 12 gauge was get at least one shot in with the OO buck and hope you hit it hard enough to distract it, shred its head with the other OO buck and a slug to kill it though all double OO buck might be a better choice.
I did some walking with my wife's family in serious Grizzly country (her sister, husband and two kids) and I told them how it would come down.
My job is to stay between you and a bear, your job (husband and sister) is to get the kids back to the truck. Do not try to do my job and I am sacrificial. You know where the keys are, go report it if I don't walk out of the woods after you. The kids are the priority here.
What serves you best is using your head, having tools and a plan of action.