A .357 Magnum revolver can be effective for protection against grizzly bears, but it is important to understand its limitations. While it is a powerful cartridge, it is not as powerful as many other cartridges commonly used for bear defense. Additionally, as a revolver, it has limited capacity and a slower rate of fire than semi-automatic handguns.
Anyone considering a .357 Magnum for bear defense should choose a quality, durable revolver, use ammunition specifically designed for bear defense, and practice regularly to remain proficient in high-stress situations.
Bear spray is widely considered more effective than firearms as a deterrent, offering greater range and faster deployment than any handgun.