The .32 Winchester Self-Loading (also called .32SL, .32SLR, or .32WSL) is an American rifle cartridge. Winchester introduced the .32SL and .35SL cartridges in the Winchester '05 self-loading rifle, a centerfire version of the Winchester '03. The .32SL never gained popularity as a hunting cartridge, although it may be suitable for the largest small game such as fox and coyote at ranges under 150 yards. Both the .32SL and .35SL were soon superseded by the introduction of the more powerful .351SL in the Winchester '07.