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.401 Winchester Self-Loading
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Rifle cartridge
Product January 2023
.401 Winchester Self-Loading .401 Winchester Self-Loading Rifle with .45-70 and .308 Win.JPG .401 Winchester Self-Loading (Center) with .308 Win (left) and .45-70 (right). 200px USA Rifle Winchester Repeating Arms Company Semi-rimmed, straight .4065 .4000 .428 .429 .457 0.05 1.50 2.005 1 in 14 in Large rifle 37000-39000 200 2141 2037 250 1875 1952 20 in Whelen, Townsend. The American Rifle. Century Co. 1918 p. 266
The .401 Winchester Self-Loading (.401SL / .401WSL) or 10.33x38mmSR is an American rifle cartridge.
Description and performance
thumb|center|450px|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.Houze, Herbert G. (2003). Winchester's First Self-Loading Rifles. 'American Rifleman' Vol 151(5) p.84.
The .401SL proved powerful enough for both deer and other large game at ranges under 150 yards.Whelen, Townsend. The American Rifle. Century Co., 1918. p.274 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.Stebbins, Henry M. Rifles, A Modern Encyclopedia. Stackpole Co., 1958. p.274
thumb|center|350px|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 2000 ft·lbf J with a 200 gr g on bullet,Sharpe Philip B. Complete Guide to Handloading Funk & Wagnalls 3rd 1953 New York 425&436–437 while the magnum revolver is credited with a muzzle energy of 790 ft·lbf J with a 210 gr g on bullet.Ramage Ken Gun Digest 2001 Krause Publications 55th 2000 Iola, Wisconsin 208 0-87341-924-3 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.April 2016
Dimensions
thumb|center|300px
See also
List of Winchester Center Fire cartridges
Table of handgun and rifle cartridges
List of cartridges by caliber
List of rifle cartridges
10 mm caliber
.40 S&W
10mm Auto
.41 Action Express
.41 Remington Magnum
.400 Legend
References
External links
401 Winchester WSL Cartridges https://web.archive.org/web/20210107165652/http://www.ammo-one.com/401WSL.html 2021-01-07
351 Winchester and 401 Winchester: Auto-Loading Pioneers
Vintage Full Box Winchester 401 Self-Loading Ammo 200 Gr. Soft Point
JezNQx1lMvk .401 Winchester Self-Loading Ammo Deal - Gungeek
Category:Pistol and rifle cartridges
Category:Winchester Repeating Arms Company cartridges
Category:Weapons and ammunition introduced in 1910