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14.5×114 mm
14.5x114 cartridge
14.5×114mm cartridge.
Type Anti-tank rifle, Heavy machine gun
Place of origin Soviet Union
Service history
In service 1941 to present
Used by Soviet Union and successor states
Wars Several
Production history
Designed 1939
Specifications
Bullet diameter 14.88 mm (Bad rounding hereScript error in)
Neck diameter 16.5 mm (Bad rounding hereScript error in)
Shoulder diameter 25.50 mm (Bad rounding hereScript error in)
Base diameter 26.95 mm (Bad rounding hereScript error in)
Rim diameter 26.95 mm (Bad rounding hereScript error in)
Rim thickness 2.5 mm (Bad rounding hereScript error in)
Case length 114 mm (Bad rounding hereScript error in)
Overall length 155.80 mm (Bad rounding hereScript error in)
Case capacity 42.53 cm³ (656 gr H2O)
Rifling twist 455 mm (1 in 17.91 in)
Maximum pressure 360 MPa (Bad rounding hereScript error psi)
Ballistic performance
Bullet weight/type Velocity Energy
59.7 g (Bad rounding hereScript error gr) MDZ HEI1,000 m/s (Bad rounding hereScript error ft/s)29,850 J (Bad rounding hereScript error ft·lbf)
60 g (Bad rounding hereScript error gr) ZP Inc.-T1,000 m/s (Bad rounding hereScript error ft/s)30,000 J (Bad rounding hereScript error ft·lbf)
64 g (Bad rounding hereScript error gr) B-32 API1,000 m/s (Bad rounding hereScript error ft/s)32,000 J (Bad rounding hereScript error ft·lbf)
64.4 g (Bad rounding hereScript error gr) BS AP1,000 m/s (Bad rounding hereScript error ft/s)32,200 J (Bad rounding hereScript error ft·lbf)
66.5 g (Bad rounding hereScript error gr) KKV1,000 m/s (Bad rounding hereScript error ft/s)33,250 J (Bad rounding hereScript error ft·lbf)
Test barrel length: 1350mm (53 inches)
Source(s): Post WWII Ammunition Russian Ammunition Page

The 14.5×114 mm (.57 Cal) is a heavy machine gun and anti-materiel rifle cartridge used by the Soviet Union, the former Warsaw Pact, modern Russia, and other countries.

It was originally developed for the PTRS and PTRD anti-tank rifles, but was later used as the basis for the KPV heavy machine gun that formed the basis of the ZPU series anti-aircraft guns that is also the main armament of the BTR series of armored personnel carriers from the BTR-60 to the BTR-80.

Cartridge dimensionsEdit

The 14.5×114 mm has 42.53 ml (655 grains H2O) cartridge case capacity. The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt action rifles and machine guns alike, under extreme conditions.

14,5 x 114

14.5×114 mm maximum cartridge dimensions. All dimensions in millimeters (mm).

Americans would define the shoulder angle at alpha/2 ≈ 22.50 degrees. The common rifling twist rate for this cartridge is 455 mm (1 in 17.91 in), 8 grooves, Ø lands = 14.50 mm, Ø grooves = 14.95 mm.

According to the official guidelines the 14.5×114 case can handle up to 360 MPa (52213 psi) piezo pressure. In C.I.P. regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers.

Ammunition typesEdit

  • BS: Armor-piercing incendiary original anti-tank round. The projectile weighs 64.4 grams and is 51 millimeters long with a 38.7 gram core of tungsten carbide with 1.8 grams of incendiary material in the tip. The overall round weighs approximately 200 grams and is 155 millimeters long. The projectile has a muzzle velocity of approximately 1,006 meters per second and can penetrate 40 millimeters of steel at an incidence of 60 degrees at a range of 100 meters, or 32 millimeters at a range of 500 meters.[1]
  • B-32: Armor-piercing incendiary full metal jacket round with a hardened steel core. Projectile weight is 64 g and muzzle velocity is 1006 m/s. Armour penetration at 500 m is 32 mm of RHA at 90 degrees.
  • BZT: Armor-piercing incendiary tracer full metal jacket round with a steel core. Projectile weight is 59.56 g and muzzle velocity is 1,006 m/s. Tracer burns to at least 2,000 m.
  • MDZ: High-explosive incendiary bullet of instant action. Projectile weight is 59.68 g.
  • ZP: Incendiary tracer round

Cartridges use lacquered steel cases and a percussion primer. Some countries also use brass cartridge cases. The propellant consists of 28.8g smokeless powder with seven tubes, designated as 5/7NA powder. Two different versions of bullet series are known, the earlier had a conventional bullet jacket with boat-tail. These had a long engraving portion that caused considerable barrel wear. The newer bullet types have a smaller engraving portion with a rounder boat-tail and were used from about 1957 on.

Chambered WeaponsEdit



ReferencesEdit

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