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23×152mmB
From Wikipedia, the free encyclopedia
The 23×152mmB[2] is a large-caliber cartridge used by the USSR/CIS in the VYa-23 aircraft autocannon the Ilyushin Il-2 ground attack aircraft and in the 2A7 and 2A14 autocannons on the ZU-23-2 anti-aircraft gun series and ZSU-23-4 "Shilka", among others.
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Quick Facts Type, Place of origin ...
23×152mmB | ||||||||
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![]() 23×152mmB API (left) and HEI (right) | ||||||||
Type | Autocannon | |||||||
Place of origin | Soviet Union | |||||||
Service history | ||||||||
Used by | Historically: USSR, Warsaw Pact Contemporarily: second-, and third-world countries | |||||||
Production history | ||||||||
Designed | 1941 | |||||||
Specifications | ||||||||
Case type | Belted, bottlenecked | |||||||
Bullet diameter | 23 mm (0.91 in) | |||||||
Neck diameter | 23.7 mm (0.93 in) | |||||||
Shoulder diameter | 31.3 mm (1.23 in) | |||||||
Base diameter | 33.2 mm (1.31 in) | |||||||
Rim diameter | 34.6 mm (1.36 in) | |||||||
Rim thickness | 33.4 mm (1.31 in) | |||||||
Case length | 151 mm (5.9 in) | |||||||
Overall length | 235.6 mm (9.28 in) | |||||||
Maximum pressure | 2925 kgf/cm2[1] | |||||||
Ballistic performance | ||||||||
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Test barrel length: 2008mm |
Close
Note that the ammunition for the VYa-23 uses a brass case and is not functionally interchangeable with the steel-cased ammunition of the modern ZU-23 anti-aircraft gun series. These two weapons use different headspace sizes, therefore requiring ammunition of slightly different dimensions.[3] While it is no longer in use in the main anti-aircraft weapons of modern Russia, being replaced by the 30×165mm, it is still in service with the Russian Naval Infantry and many other countries.