.38-55 Winchester
The .38-55 Ballard later called .38-55 Winchester, or in metric terms 9.6x53mmR (actually .3775 caliber), is a Straight-walled centerfire rifle cartridge based on an earlier .38-50 Ballard Everlasting cartridge introduced in 1876 by the Ballard Rifle & Cartridge Company. First chambered by Ballard and Marlin Firearms, then it was later offered by Winchester in its Model 1894, who usurped the name, designating it the 38-55 WCF, although it was an exact dimensional copy of the 38-55 Ballard.