The 76-mm regimental gun M1943 (OB-25) (Russian: 76-мм полковая пушка обр. 1943 г. (ОБ-25)) was a
Soviet
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
infantry support gun
Infantry support guns or battalion guns are artillery weapons designed and used to increase the firepower of the infantry units they are intrinsic to, offering immediate tactical response to the needs of the unit's commanding officer. They typicall ...
developed in 1943 by M. Yu. Tsiryulnikov at the
ordnance plant in Motovilikha. The gun used a modernized barrel from the
76 mm regimental gun M1927 and the carriage from the
45 mm anti-tank gun M1942 (M-42)
The M-42 was a 45-mm Soviet Union, Soviet light semi-automatic anti-tank gun. Its full official name is 45-mm anti-tank gun model 1942 (M-42) (Russian: 45-мм противотанковая пушка образца 1942 года (М-42)). These ...
. The gun was intended for destruction of light field fortifications and openly placed personnel by direct fire.
HEAT
In thermodynamics, heat is defined as the form of energy crossing the boundary of a thermodynamic system by virtue of a temperature difference across the boundary. A thermodynamic system does not ''contain'' heat. Nevertheless, the term is al ...
shells gave it limited anti-armor capabilities. 76.2-mm regimental guns M1943 completely replaced M1927 guns in production that year and were built until the end of the
German-Soviet War. Soon after the end of the war the production ceased due to insufficient range and muzzle velocity.
Ammunition
*Ammunition types:
**Fragmentation-
HE: OF-350.
**Fragmentation: O-350A.
**
HEAT
In thermodynamics, heat is defined as the form of energy crossing the boundary of a thermodynamic system by virtue of a temperature difference across the boundary. A thermodynamic system does not ''contain'' heat. Nevertheless, the term is al ...
: BP-350M.
*Projectile weight:
**OF-350: 6.2 kg.
*Muzzle velocity:
**OF-350, O-350A: 262 m/s.
**BP-350M: 311 m/s.
*Effective range:
**OF-350, O-350A: 4,200 m.
**BP-350M: 1,000 m.
Notes
References
* Chamberlain, Peter & Gander, Terry. ''Infantry, Mountain and Airborne Guns''. New York: Arco, 1975
* 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., )
* Shunkov V. N. - ''The Weapons of the Red Army'', Mn. Harvest, 1999 (Шунков В. Н. - ''Оружие Красной Армии.'' — Мн.: Харвест, 1999.)
World War II field artillery
World War II artillery of the Soviet Union
76 mm artillery
Motovilikha Plants products
Weapons and ammunition introduced in 1943
{{artillery-stub