.35 Winchester Self-Loading

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.35 Winchester Self-Loading
.35 Winchester Self-Loading, .351 Winchester Self-Loading, .45 ACP.jpg
From left to right: .35 Winchester Self-Loading, .351 Winchester Self-Loading, .45 ACP
Place of originUnited States
Production history
DesignerWinchester Repeating Arms Company
Case typeSemi-rimmed
Bullet diameter.351 in (8.9 mm)
Neck diameter.377 in (9.6 mm)
Base diameter.381 in (9.7 mm)
Rim diameter.405 in (10.3 mm)
Rim thickness0.05 in (1.3 mm)
Case length1.154 in (29.3 mm)
Overall length1.65 in (42 mm)
Rifling twist1 in 16
Primer typeSmall rifle
Ballistic performance
Bullet mass/type Velocity Energy
180 gr (12 g) 1,396 ft/s (426 m/s) 779 ft⋅lbf (1,056 J)
Test barrel length: 22

The .35 Winchester Self-Loading (also called .35SL, .35SLR, or .35WSL) is an American rifle cartridge.

Winchester introduced the .32SL and .35SL in the Winchester '05 self-loading rifle as a centerfire cartridge version of the Winchester '03. The .35SL proved popular at first with the general public as a short-range deer and black bear hunting cartridge, but was soon superseded by the introduction of the more powerful .351SL in the Winchester '07.[1]

Many now consider the .35SL inadequate as a deer round, but it may still be suitable for coyote or similar medium-sized game at close ranges. When first introduced however, the notable firearm expert Townsend Whelen noted the .35SL cartridge as displaying similar ballistics as the .38-40 black powder, low-pressure cartridge.[2]

See also[edit]


  1. ^ Stebbins, Henry (1958) Rifles: A Modern Encyclopedia Stackpole Books, p. 127
  2. ^ Whelen, Townsend (1918) The American Rifle Century Co. p. 266