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.218 Bee
The .218 Bee is a .22 caliber centerfire rifle cartridge designed for varmint hunting by Winchester in 1938. The cartridge was originally chambered in lever-action rifles, which may have ultimately led to its lack of popularity. The cartridge is named for the bore diameter of the barrel in which the cartridge is chambered rather than the usual practice in the United States of having the cartridge's nomenclature reflect in some way the bullet diameter.
==History==
The .218 Bee cartridge was designed by Winchester for use in their lever-action rifles. Winchester designed the cartridge by necking down the .25-20 Winchester cartridge to accept a .224 diameter bullet. As the .25-20 had been based on the .32-20 Winchester, the .32-20 Winchester can be considered to be the parent cartridge of the .218 Bee. The cartridge was introduced as a commercial cartridge by Winchester in 1939 in their Model 65 lever action rifle, which was also chambered for the .25-20 and .32-20 Winchester cartridges. However, while the .25-20 and the .32-20 Model 65 rifles had 22 inch (560 mm) barrels, the rifles chambered for the Bee sported 24 inch (610 mm) barrels.
While early on the cartridge showed some promise, the cartridge never really caught on, even though it was later chambered by Winchester in the new bolt-action Model 43 rifle and by Sako in their L-46 rifle. There was some question about the accuracy of the .218 Bee as compared to the .222, but that was likely due to the difference of inherent accuracy between the bolt-actions rifles commonly chambered for the .222 and the lever-actions commonly chambered for the .218 Bee. Although not in common use, it's still a very effective cartridge in its class, for example small to medium varmints out to about . Production ammunition and rifles are still available from a few manufacturers.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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