Well, having just moved back to Oklahoma from Alaska, where a part of my job was putting down nuisance brown bears, I may be able to assist you with some information.
I had a S&W Model 29 .44 Magnum, which I decided wasn't big enough for the task of backing up my guide gun. So I purchased a nice Taurus Raging Bull in .480 Ruger. About a year and a half back, we put down a three year old brownie with a .45-70 guide gun (by the way, if you don't mind carrying a rifle...). I noticed the bear was still alive and thought I would use my "new" .480 Ruger to put the critter out of his misery. From a distance of approximately 10', two jacketed flat point Buffalo Bore rounds failed to penetrate the skull.
I went out the next day and purchased a .500 S&W with a 4" barrel. Suprising as it may seem, this revolver is not bad to shoot. The weight of the revolver, as well as the ported barrel really tames the recoil. Don't get me wrong, it is still a handfull. Because I liked the idea of a semi-auto rifle for this type of activity, I built a .50 Beowulf AR-15 to carry for my primary weapon and used the .500 S&W as my backup.
My point being, get the biggest caliber that you can comfortably shoot well. Any one of the 454 Casull, .460, or .500 S&W should be adequate. I would not suggest the "Emergency Gun Kit", as the snub nose revolver might allow enough recoil to be a bit painful.
Just my
I had a S&W Model 29 .44 Magnum, which I decided wasn't big enough for the task of backing up my guide gun. So I purchased a nice Taurus Raging Bull in .480 Ruger. About a year and a half back, we put down a three year old brownie with a .45-70 guide gun (by the way, if you don't mind carrying a rifle...). I noticed the bear was still alive and thought I would use my "new" .480 Ruger to put the critter out of his misery. From a distance of approximately 10', two jacketed flat point Buffalo Bore rounds failed to penetrate the skull.
I went out the next day and purchased a .500 S&W with a 4" barrel. Suprising as it may seem, this revolver is not bad to shoot. The weight of the revolver, as well as the ported barrel really tames the recoil. Don't get me wrong, it is still a handfull. Because I liked the idea of a semi-auto rifle for this type of activity, I built a .50 Beowulf AR-15 to carry for my primary weapon and used the .500 S&W as my backup.
My point being, get the biggest caliber that you can comfortably shoot well. Any one of the 454 Casull, .460, or .500 S&W should be adequate. I would not suggest the "Emergency Gun Kit", as the snub nose revolver might allow enough recoil to be a bit painful.
Just my