Automatic cannons

Source: Wikipedia. Pages: 71. Chapters: MK 108 cannon, Bofors 40 mm, Hispano-Suiza HS.404, Oerlikon 35 mm twin cannon, M242 Bushmaster, QF 2 pounder naval gun, Oerlikon 20 mm cannon, 2 cm FlaK 30/38/Flakvierling, Autocannon, QF 1 pounder pom-pom, M4 cannon, MG 151 cannon, Mk 19 grenade launcher, Type 99 cannon, ADEN cannon, 30 mm automatic cannon 2A42, MG FF cannon, Volkov-Yartsev VYa-23, M230 Chain Gun, XM307 Advanced Crew Served Weapon, Rikhter R-23, Denel 35mm Dual Purpose Gun, Typhoon Weapon System, Nudelman-Rikhter NR-30, Afanasev Makarov AM-23, DEFA cannon, Mauser BK-27, RARDEN, ShVAK cannon, Mk44 Bushmaster II, COW 37 mm gun, Gyro Rate Unit, DARDO, Gryazev-Shipunov GSh-23, Rheinmetall RMK30, Revolver cannon, Polsten, CRN 91 Naval Gun, AK-230, BK 5 cannon, Gryazev-Shipunov GSh-301, MK 103 cannon, Pom-Pom Director, 25 mm Hotchkiss anti-aircraft gun, Nudelman-Rikhter NR-23, Oerlikon Millennium 35 mm Naval Revolver Gun System, 20 mm Becker, T249 Vigilante, Howa Type 96, MK 101 cannon, Vickers S, GIAT 30, Oerlikon FF, Hispano-Suiza HS.820, 20 mm modèle F2 gun, Meroka CIWS, Gryazev-Shipunov GSh-30-2, Nudelman-Suranov NS-23, Ho-301 cannon, Colt Mk 12 cannon, Nudelman-Suranov NS-37, Rheinmetall MK 20 Rh 202, Rheinmetall 20 mm Twin Anti-Aircraft Cannon, Nudelman N-37, List of autocannons, Sea Zenith, Yak-B 12.7mm machine gun, Mk 18 Mod 0 grenade launcher, Type 85/YW 306, M39 cannon, Mk 20 Mod 0 grenade launcher, Berezin B-20, Medak gun, Nudelman-Suranov NS-45, Fajr-27, Bushmaster III, Type 61 25mm AAA guns, BK 37, M621 cannon, 38FK, Ho-5 cannon, 30 mm Breda-Mauser, Type 5 cannon, Pyrotechnic cocking charge, Mauser MG 213, Ho-204 cannon, Ho-203 cannon, Ho-3 cannon, Ho-401 cannon, Ho-1 cannon, Ho-155 cannon, Type 2 cannon. Excerpt: The Bofors 40 mm gun is an anti-aircraft autocannon designed by the Swedish defence firm of Bofors. It was one of the most popular medium-weight anti-aircraft systems during World War II, used by most of the western Allies as well as by the Axis forces. The cannon remains in service as of 2011, making it one of the longest-serving artillery pieces of all time. It is often referred to simply as the Bofors gun. The Swedish Navy purchased a number of 2 pounder Pom-Poms from Vickers as anti-aircraft guns in 1922. The Navy approached Bofors about the development of a more capable replacement. Bofors signed a contract in late 1928. Bofors produced a gun that was a smaller version of a 57 mm (6-pounder) semi-automatic gun developed as an anti-torpedo boat weapon in the late 1800s by Finspong. Their first test gun was a re-barreled Nordenfelt version of the Finspong gun, to which was added a semi-automatic loading mechanism. Testing of this gun in 1929 demonstrated that a problem existed feeding the weapon in order to maintain a reasonable rate of fire. A mechanism that was strong enough to handle the stresses of moving the large round was too heavy to move quickly enough to fire rapidly. One attempt to solve this problem used zinc shell cases that burned up when fired. This proved to leave heavy zinc deposits in the barrel, and had to be abandoned. In the summer of 1930 they began experimenting with a new test gun that did away with controlled feed and instead flicked the spent casing out the rear whereafter a second mechanism reloaded the gun by "throwing" a fresh round from the magazine into the open breech. This seemed to be the solution they needed, improving firing rates to an acceptable level, and the work on a pr...