Nagant M1895 - Technical Characteristics

Technical Characteristics

Non-gas seal revolvers have a small gap between the cylinder and the barrel; the small gap between the cylinder and barrel is necessary to allow the revolver's cylinder to revolve, presenting a new, loaded chamber for firing. This necessitates that the bullet jump the gap when fired, which may have an adverse effect on accuracy, especially if the barrel and chamber are misaligned, and also presents a path for the escape of high-pressure and high-temperature gases from behind the bullet. The M1895 has a mechanism which, as the hammer is cocked, first turns the cylinder and then moves it forward, closing the gap between the cylinder and the barrel. The cartridge, also unique, plays an important part in sealing the gun to the escape of propellant gases. The bullet is deeply seated, entirely within the cartridge case, and the case is slightly reduced in diameter at its mouth. The barrel features a short conical section at its rear; this accepts the mouth of the cartridge, completing the gas seal. By sealing the gap, the velocity of the bullet is increased by 50 to 150 ft/s (15 to 45 m/s).

However, success had its price. Nagant revolvers had to be reloaded one cartridge at a time through a loading gate, with the need to manually eject each of the used cartridges, making reloading laborious and time-consuming.

The Nagant M1895 was made in both single-action and double-action models before and during World War I; they are known colloquially as the “Private's model” and the “Officer’s model”, respectively. Production of the single-action model seems to have stopped after 1918, with some exceptions, including examples made for target competition. Most single-action revolvers were later converted to double-action, making original single-action revolvers rather rare.