Colt Walker of Texas had been the major purchaser of the early Paterson Holster Pistol (No. 5 model), a five shot cal .36 revolver, and Samuel Walker became familiar with it during his service as a Texas Ranger. In 1847, Walker was engaged in the Mexican-American War as a captain in the United States Mounted Rifles. He approached Colt, requesting a large revolver to replace the single-shot Aston Johnson holster pistols then in use. The desired .44-.45 caliber revolver would be carried in saddle mounted holsters and would be large enough to dispatch horses as well as enemy soldiers. The Colt Walker
.32 Long Colt .32 Long Colt The .32 Long Colt (commonly called the .32 LC or simply .32 Colt) is an American centerfire revolver cartridge. Introduced by Colt's with the New Line revolver in 1873, the .32 Colt was inspired by the .320 Revolver. It originally used a .313 in (7.95 mm)-diameter 90 gr (5.8 g) outside-lubricated bullet, which was later changed to inside lubrication, leading to a diameter change to .299 in (7.59 mm), a slight reduction in bullet weight, and a shortening of overall length. With a case lengthened by .31 in (7.87 mm) over the .32 Short Colt (which means