The Army did go through several .44 caliber revovlers prior to adopting the .45 Colt. Following the Civil War the Army returned many cap-and-ball Remington and Colt revolvers to be converted to take metallic cartridges. These were in .44 Colt caliber and ammunition was produced at Frankford Arsenal using the Martin Folded head case. Also trial use of the Smith & Wesson No. 3 in .44 S&W American caliber. During this time the Army bought the Remington .50 caliber rollin block pistol. Apparently the Colt M1873 so overwhelmed the officers as to make it the primary choice.