Vickers Machine Gun - Specifications

Specifications

The weight of the gun itself varied based on the gear attached, but was generally 25 to 30 pounds (11 to 14 kg) with a 40-to-50-pound (18 to 23 kg) tripod. The ammunition boxes for the 250-round ammunition belts weighed 22 pounds (10.0 kg) each. In addition, it required about 7.5 imperial pints (4.3 l) of water in its evaporative cooling system to prevent overheating. The heat of the barrel boiled the water in the jacket surrounding it. The resulting steam was taken off by flexible tube to a condenser container—this had the dual benefits of avoiding giving away the gun's location, and also enabling re-use of the water, which was very important in arid environments.

In British service, the Vickers gun fired the standard .303 inch cartridges used in the Lee Enfield rifle, which generally had to be hand-loaded into the cloth ammunition belts. There was also a 0.5 in calibre version used as an anti-aircraft weapon and various other calibres produced for foreign buyers. Some British tanks of the early Second World War were equipped with the 0.5 in Vickers.

The gun was 3 ft 8 in long and its cyclic rate of fire was between 450 and 600 rounds per minute. In practice, it was expected that 10,000 rounds would be fired per hour, and that the barrel would be changed every hour—a two-minute job for a trained team. Firing the Mark 8 cartridge, which had a boat tailed bullet, it could be used against targets at a range of approximately 4,500 yards (4,100 m).