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Grizzly bears are large dangerous animals. A powerful firearms cartridge is required to dispatch one whether in a hunting situation or for self defense. Many hunters have been seriously injured or killed by these bears because, in a majority of instances, the caliber of cartridge was inadequate. There are many calibers available that are highly recommended for handling these tough bruins.
Bolt-action rifles are available chambered for just about any caliber ever made. The 7 mm Remington Magnum is the smallest cartridge recommended for grizzly bears. Other bolt-action calibers include the .300 and .338 Winchester Magnums, .300 and .340 Weatherby Magnums, .375 H&H Magnum and the tremendously powerful .458 Winchester Magnum.
While lever-action rifles are generally chambered for less powerful cartridges than bolt-action weapons, there some that can be recommended for grizzly bears. The .45-70 Government debuted more than 100 years ago, but is considered useful for large game such as the great bears. The .444 Marlin and .450 Marlin are very powerful cartridges that can be used to dispatch a bruin quickly and humanely.
The single-shot action is a specialized type of rifle. It can be chambered in powerful calibers, but they should only be used on dangerous game by seasoned shooters. Calibers deemed too powerful for a bolt action can be handled quite safely in a strong, modern single-shot firearm. The drawback is that only one shot can be fired at a time. Single-shot rifle calibers recommended for grizzly bears include .338 Winchester Magnum, .375 H&H Magnum and .458 Winchester Magnum.
Double rifles have traditionally been used by big game hunters in Africa. Some are powerful enough to be used on elephants. Grizzly bear have such a ferocious reputation that many bear hunters desire to use that power to safely hunt the large bruin. Double rifles give the shooter the ability to fire a quick second shot if one is needed. The .375 H&H, .404 Jeffrey, .450 Lott, .450-400, .500 Nitro-Express and the tremendously powerful .505 Gibbs are calibers that can be recommended for use in double rifles against grizzly bears.
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