Development and Production History
In the early 1930s the RKKA command considered the idea of universal guns - i.e. guns which could be used both as field and anti-aircraft weapons. Mikhail Tukhachevsky, the head of the ordnance department between 1931 and 1934, ordered the development of universal (with 360° traverse) and semi-universal divisional pieces.
Among other artillery design bureaus joining the program were the design bureau of the "Krasniy Putilovets" plant (L-1 and L-2 universal guns), the design bureau of the no. 8 plant (semi-universal guns 25K, 31K and 32K) and GKB-38 (universal A-52 and semi-universal A-51). GKB-38 was closed in 1933, and V. G. Grabin, the leading developer of the team that was working on the A-51 project - became the head of a design bureau of the new Novoye Sormovo (no. 92) plant in Gorky. In 1934 the A-51 - redesignated F-20 - was finished, but Grabin wasn't satisfied with the result and started to work on a new gun, the F-22.
In April 1935 three prototypes of the F-22 were ready, two of them with split-trail carriages. All prototypes had muzzle brakes and lengthened chambers for a new experimental shell (7.1 kg, muzzle velocity 710 m/s, range up to 14,060 m). Factory trials started on 8 May; on 9 June prototypes were brought to the Sofrinsky firing ground near Moscow. On 14 June the gun, along with other artillery pieces, was demonstrated to the country leaders including Joseph Stalin. The F-22 made a good impression and was sent for ground testing, which was finished on 16 December. In July 1935 the plant was required to produce 10 pieces. In March 1936 four guns were given to the RKKA for testing, which continued until 22 April. Despite some shortcomings, on 11 May 1936 the gun was adopted as the 76 mm divisional gun model 1936 (F-22) (Russian: 76-мм дивизионная пушка образца 1936 года (Ф-22)). The final model lacked a muzzle brake (which - the army said - raised too much dust, revealing the position of the gun) and was rechambered for the model 1900 cartridge to allow use of old 76.2 mm ammunition.
The F-22 was produced by two plants, no. 92 and Kirov Plant, possibly also by "UZTM" (Ural Heavy Machinery Building Plant). Production rate was slow because of more sophisticated construction compared to older guns and because of constant need to fix faults in the design. In 1936 only 10 pieces were produced, in 1937 - 417, in 1938 - 1,002, in 1939 - 1,503. Production was stopped due to adoption of a new gun, the 76 mm divisional gun model 1939 (USV).
Read more about this topic: 76 Mm Divisional Gun M1936 (F-22)
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