38 Single Action that is retroactively referred to as the Model 2. Model 3 revolvers were later produced in an assortment of calibers, including. 44 Russian cartridges, and typically did not have the cartridge information stamped on the gun (as is standard practice for most commercial firearms). The Model 3 was originally chambered for the. S&W incorporated these modifications into an 1875 design they named after the major, planning to obtain significant military contracts for the new revolver. Schofield, who made his own modifications to the Model 3 to meet his perceptions of the cavalry's needs. 44 caliber by the Imperial Russian Army in 1871), and the 'Schofield' model, named after Major George W. It was produced in several variations and subvariations, including both the 'Russian' model, so named because it was supplied to the military of the Russian Empire (41,000 No. The Smith & Wesson Model 3 is a single-action, cartridge-firing, top-break revolver produced by Smith & Wesson (S&W) from around 1870 to 1915, and was recently again offered as a reproduction by Smith & Wesson and Uberti.