.401 Winchester Self-Loading

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The .401 Winchester Self-Loading (.401SL / .401WSL) or 10.33x38mmSR is an American rifle cartridge.

Description and performance

File:401 Winchester Self-Loading.JPG
Illustration of a .401 Winchester Self-Loading rifle cartridge (1918).

Winchester introduced the .401SL in the Winchester '10 self-loading rifle as a supplement to the Winchester '07 and the .351SL in their offering of hi-power, self-loading rifles. The only chambering available in the Winchester Model 1910, the .401SL was used by France, Russia, and American company security forces in the First World War.[1]

The .401SL proved powerful enough for both deer and other large game at ranges under 150 yards.[2] Both 200gr and 250gr bullet weights were offered by Winchester and other ammunition manufacturers as factory loadings. With extra available detachable magazines holding 4-rounds each, the Model 1910 could provide substantial firepower for the big-game hunter. This feature helped promote the use of the .401SL on dangerous game such as moose and grizzly bear in spite of the lack of controlled expansion bullet designs, which doubtlessly would have improved game-taking performance and the subsequent reputation of the .401SL cartridge.[3]

File:401 Winchester SL cartridge hr metallic.jpg
The .401 Winchester Self-Loading cartridge.

The .401 SL is of similar size to the later .41 Remington Magnum; but the longer self-loading rifle cartridge produced a muzzle energy of Script error: No such module "convert". with a Script error: No such module "convert". bullet,[4] while the magnum revolver is credited with a muzzle energy of Script error: No such module "convert". with a Script error: No such module "convert". bullet.[5] The .41 Remington Magnum revolver comparison is not entirely fitting, however, as a cartridge will often produce twice the muzzle energy when fired from a carbine as it does from a typically much shorter revolver barrel.Script error: No such module "Unsubst".

Dimensions

File:401 Winchester SL dimensions mm vertical.jpg

See also

References

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  1. Houze, Herbert G. (2003). Winchester's First Self-Loading Rifles. 'American Rifleman' Vol 151(5) p.84.
  2. Whelen, Townsend. The American Rifle. Century Co., 1918. p.274
  3. Stebbins, Henry M. Rifles, A Modern Encyclopedia. Stackpole Co., 1958. p.274
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External links

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