| .35 Winchester Self-Loading | |
| Origin: | United States |
| Type: | Rifle |
| Designer: | Winchester Repeating Arms Company |
| Case Type: | Semi-rimmed, straight |
| Bullet: | .351 |
| Neck: | .377 |
| Base: | .381 |
| Rim Dia: | .405 |
| Rim Thick: | 0.05 |
| Case Length: | 1.154 |
| Length: | 1.65 |
| Rifling: | 1 in 16 |
| Primer: | Small rifle |
| Bw1: | 180 |
| Vel1: | 1396 |
| En1: | 779 |
| 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proved popular at first with the general public as a short-range deer and black bear hunting cartridge, but was soon superseded by the introduction of the more powerful .351SL in the Winchester '07.[1]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]