Red Army a relatively lightweight, reliable corps artillery piece with improved range and a wide array of ammunition. On the other side, it failed to address other drawbacks of the weapon. Because of its unsprung wheels, the M1910/30 was unsuitable for high-speed transportation. A very small traverse of 6 degrees limited the effectiveness of the gun against enemy tanks, despite decent armor penetration. For the sake of comparison, the standard German 105 mm gun, the 10.5 cm sK 18, surpassed the M1910/30 in range (19 km, or 21 km for a modernized K 18/40), traverse (60 degrees) and transportation speed (up to 40 km/h). This, however, came at a price of a much larger weight of about six tons. In 1940, the RKKA adopted a more modern 107 mm gun, the M-60. Although originally intended - and officially designated - as a divisional gun, in practice the M-60 was never used by rifle divisions; from 1943 it mainly served in the reintroduced corps artillery. However, soon after the outbreak of war, production of the M-60 was stopped. In 1943 another 107 mm gun, the 9S-1, was developed, but it was never adopted, leaving the M1910/30 the last mass production 107 mm piece in Red Army service. Ammunition The gun fired separately loaded, cased charge ammunition. Two different charges – full and reduced – were used. Use of the full charge was prohibited with the muzzle brake removed, or with old high-explosive ammunition, shrapnel and smoke rounds. The explosion of the OF-420 shell, with the fuse set to the fragmentation action, resulted in damage to 90% of targets in the 6 to 14 meters area and to 50% of targets in a 20 to 42 meter area. When the fuse was set to high-explosive action, the shell made a crater 1–1.5 m in diameter and 40–60 cm deep in an average soil. The shrapnel shell contained more than 600 bullets and covered an area about 800 m long and 45–50 m wide. Notes References Ivanov A. - Artillery of the USSR in Second World War - SPb Neva, 2003 (Иванов А. - Артиллерия СССР во Второй Мировой войне. — СПб., Издательский дом Нева, 2003., ) Kolomiets M. - The Battle of River Khalkhin-Gol - "Frontovaya Illustratsiya" magazine, no. 2, 2002 (М.Коломиец. - Бои у реки Халхин-Гол. - журнал «Фронтовая иллюстрация», No. 2, 2002) Shirokorad A. B. - Encyclopedia of the Soviet