Treadwell was a certified nut case...the betting pool from Natural Resources was not IF he was going to get it by a bear but WHEN .
In the latest issue of Guns & Ammo, the point Cooper makes about a pistol being a good defensive weapon against bears out to 50 yds is correct, but if you shoot the bear at that range you might be charged with unlawful death of the animal...that is still a fairly safe distance to be.
What would I use on bears, nothing smaller than a 9.3 X 74 or .375 H&H. Likely the .416 Rigby or the .400 H&H. They all have the power to stop a charge and the range to push out to 300 yds
At the fishing/hunting lodge by Hudson's/James Bay we use shotguns loaded with "Bangers", shotshells that shoot an explosive sound round, whose loud noise scares the bears off quite well...we can't have handguns for protection in Canada, so I just got into the habit of carrying my .425 Westley Richards bolt gun whenever, I set foot outside the cabin.
We'll scare off about 15 Polar bears a season from the cabins, they come for the garbage dump, 2 miles upwind of the cabins. Mind you we'll scare off each one about 4 or 5 times until they get the idea that they're not wanted. We burn everything that we can, but their sense of smell is so great that if a can has a speck of something inside they'll rip it apart to get at it. We have electrical sensor wire, that gives a shock to the animal and sounds an alarm, around the perimeter of the camp, and the camp is NEVER left unattended with food in the kitchen...yes, the cook is armed with either a shotgun and a Marlin lever gun in .41 magnum or a .45/70 Gov.
Life in the wilds, ain't it grand.
We have shore lunches, with the worst of the mornings catch. After cleaning the fish (we leave everything for the gulls) by the waters edge...we will not go back to that fishing site for at least a week, until the minuscule amount of blood on the rocks is washed or licked away, because the site will still be attractive to the bears sense of smell, and you don't want to surprise a Polar bear at their feeding, unless you want to become the dessert, as that then is when they are most protective, maybe even more so than getting between a sow and her cubs. I've done the first but not the second, so I can't tell you exactly which is the stupider to do.