firearms

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Cartridges Russia

12.7x107 large-caliber cartridges

12.7 mm large-caliber cartridges

12.7 mm large-caliber cartridges

    The large-caliber small arms and first of all large-caliber machine guns have appeared on battle fields of the First World War. It became the answer to a wide extent of armoured vehicles and first tanks appearance. Development of aviation and is application for ground targets defeat has demanded, in turn, creation of weapon for it. For this reason, an air defence of ground forces and navy arisen a! that time has been partially assigned to large-caliber machine guns also. In 1930-40 large-caliber machine guns have found wide application in aviation.
     In the USSR large-caliber cartridge designing has been begun at 1927. The first domestic large-caliber cartridge has been created at the Tula cartridge factory and accepted on arms at 1930. It has received the name 12.7 mm cartridge with armour piercing bullet 1930 model B-30. Subsequently new kinds of cartridges with armour piercing incendiary, armour piercing incendiary tracing, incendiary, ranging and other types of bullets have been created for expansion of large-caliber machine guns opportunities. Their development was conducted originally at Tula and then Ulyanovsk cartridge Works, a plant №46 and OKB-44 (both enterprises settled down in Kuntcevo, Moscow) and TSNIITOCHMASH.
     At present some types of 12.7 mm cartridges (12.7x108) which are used for shooting from large-caliber machine guns DSHKM, NSB-12.7 «Utes» (NSVI and NSVS), «CORD», YAkB-12.7 and large-caliber sniper rifles ASBK «CORD» and OSV-96 are on arms.
     Manufacture of 12.7mm cartridges is adjusted on Novosibirsk and Ulyanovsk cartridge Works. All types of 12.7mm cartridges are made with a brass cartridge case.

 

Cartridges with armour piercing incendiary bullet 12.7 B-32 (57-BZ-542 and 7-BZ-2)


Cartridges with armour piercing incendiary bullet 12.7 B-32 (57-BZ-542 and 7-BZ-2)
Cartridges with armour piercing incendiary bullet 12.7 B-32 (57-BZ-542 and 7-BZ-2)

     
  General properties of cartridges 12.7 B-32

Weight of a cartridge, g............................................133.5
Weight of a bullet, g...................................................48.2
Length of a cartridge, mm............................................147
Muzzle velocity, m/s.....................................................818
 
 

   Cartridge with armour piercing incendiary bullet B-32 has been created by designers of factory № 46 instead of a cartridge with bullet B-30 and accepted on arms at 1936. Such cartridge name B-32 has been chosen because it has been made as 7.62 mm rifle cartridge B-32 accepted on arms at 1932.
     12.7 B-32 cartridge is intended for defeat of light armouring targets, military personnel and firing means which are being behind light shelters and also low-flying aircrafts and helicopters at range up to 1500 m.
     Armour breakdown is carried out by high-strength treated steel core. Incendiary action is provided by pyrotechnic incendiary composition located on a bullet head part before the core.
     This cartridge bullet punches out 20 mm armour at distance up to 100 m and provides ignition of fuel (gasoline and aviation kerosene) after breakdown light armour protection of combat vehicle and combat helicopters on greater distances.
     Bullet head pan is black with red rib.

Armor-piercing incendiary bullet cartridge 12.7 B-32
Armor-piercing incendiary bullet cartridge 12.7 B-32

 

Cartridges with armour piercing incendiary tracing bullets 12.7 BZT-44 (57-BZT-542)
and 12.7 BZT-44M (57-BZT-542M)

Cartridge with armor-piercing incendiary tracer bullet - 12.7 BZT-44 (57-BZT-542)
Cartridge with armor-piercing incendiary tracer bullet - 12.7 BZT-44 (57-BZT-542)

     
  General properties of cartridges 12.7 BZT-44

Weight of a cartridge, g...............................................128
Weight of a bullet, g......................................................44
Length of a cartridge, mm............................................147
Muzzle velocity, m/s.....................................................818
 
 

    Cartridge 12.7 BZT-44 has been developed at ОКБ-44 and accepted on arms at 1943 Instead of a cartridge with armour piercing incendiary bullet BZT its manufacturability has been improved and burning brightness and tracing range are increased.
     Modernization of the cartridge 12.7 BZT-44 was spent at the beginning of 1990s at TSNIITOCHMASH. The new cartridge has been accepted on arms at 2002 and has received name 12.7mm cartridge with advanced armour piercing incendiary tracing bullet BZT-44M. Tracer ignition of advanced bullet occurs at distance up to 50-120m from muzzle. It complicates detection of a gun position by the enemy, not blinded the rifleman and reduces a night sights flash.
     Cartridges 12.7 BZT-44 and 12.7 BZT-44M are intended for defeat of low-flying air targets, tight armouring technical equipment, vehicles and group military personnel and also for fire correction and target designation. These cartridges can be used for fires creation.
     Cartridges 12.7 BZT-44 and 12.7 BZT-44M are usually applied for shooting from antiaircraft machine guns together with cartridge B-32.
     Bullets of cartridges 12.7 BZT-44 and 12.7 BZT-44M provide breakdown of armour plate thickness 15 mm at range up to 100 m and fuel ignition behind armour.
     The bullet peaked core is made from heat-strengthened tool steel. The incendiary composition is located in a bullet head part before the core. Tracer is pressed in little cartridge and also is located behind the core.
     The bullet head part is violet with red rib.

Armor-piercing incendiary tracer bullet cartridge 12.7 BZT-44
Armor-piercing incendiary tracer bullet cartridge 12.7 BZT-44

 

Cartridge with armour piercing incendiary bullet 12.7 BS (7-BZ-1)

Cartridge with armour piercing incendiary bullet 12.7 BS (7-BZ-1)
Cartridge with armour piercing incendiary bullet 12.7 BS (7-BZ-1)

     
  General properties of cartridges 12.7 BS

Weight of a cartridge, g................................................141
Weight of a bullet, g...................................................55.4
Length of a cartridge, mm............................................147
Muzzle velocity, m/s.....................................................818
 
 

    Cartridge with armour piercing incendsary bullet BS (BS — armour piercing core) has been developed at TSNIITOCHMASH and accepted on arms at 1974. It is intended for defeat of light armouring targets, military personnel and firing means which are being behind light shelters and also low-flying targets.
     Bullet BS has considerably the best armour breakdown action than bullet B-32. It is capable to punch out 20 mm armour less than 20 degrees corner from a normal at distance up to 750 m. Such armour breakdown level allows successfully hitting targets such as armoured personnel carrier APC M-113 type at distance up to 700-800 m.
     The increased breakdown action of this bullet is provided due to ceramic-metal core usage. For incendiary action of a bullet increase the pyrotechnic incendiary composition is located not only in a buffet head part before the core but also in special little cartridge after it.
Painting of a bullet is red up to a bullet compression place by cartridge case with a black head part.

Armor-piercing incendiary bullet cartridge BS 12.7 (7-BR-1)
Armor-piercing incendiary bullet cartridge BS 12.7 (7-BR-1)

 

Cartridges with incendiary bullet of snap-action 12.7 MDZ (7-3-2)

Cartridges with incendiary bullet of snap-action 12.7 MDZ (7-3-2)
Cartridges with incendiary bullet of snap-action 12.7 MDZ (7-3-2)

     
  General properties of cartridges 12.7 MDZ

Weight of a cartridge, g...............................................127
Weight of a bullet, g......................................................43
Length of a cartridge, mm............................................147
Muzzle velocity, m/s.....................................................828
 
 

    Cartridge 12.7 MDZ (MDZ — snap-action incendiary) has been developed by experts at cartridge factory in Ulyanovsk.
     This cartridge is intended for low-flying air targets defeat from antiaircraft machine gun installations, it also can be used for fires hearth creation. The cartridge with incendiary bullet is usually used together with cartridges 12.7 B-32 and 12.7 BZT-44M.
     The detonator of percussion-air action which initiates high explosive charge is activated by bullet hit in barrier. Thus it is provided breakdown of duralumin sheets of 2-3 mm thickness with formation of aperture in 30-40sm diameter and kerosene or gasoline ignition in fuel tanks of aircraft or helicopters.
     Painting of a bullet is red up to compression place by a cartridge case.

Snap-action incendiary bullet cartridge 12.7 MDZ
Snap-action incendiary bullet cartridge 12.7 MDZ

 

Double bullet cartridges 12.7 1SL (9-A-4012) and 12.7 1SLT (9-A-4427)

Double-bullet cartridge - 12.7 1SL (9-A-4012)
Double-bullet cartridge - 12.7 1SL (9-A-4012)

Double-bullet cartridge - 12.7 1SLT (9-А-4427)
Double-bullet cartridge - 12.7 1SLT (9-А-4427)

     
  General properties of cartridges 12.7 1SL

Weight of a cartridge, g...............................................145
Weight of the first bullet, g...........................................31
Weight of the second bullet, g.......................................31
Length of a cartridge, mm............................................147
Muzzle velocity of the first bullet, m/s.........................735
Muzzle velocity of the second bullet, m/s.....................680

General properties of cartridges 12.7 1SLT

Weight of a cartridge, g...............................................142
Weight of the first bullet, g...........................................31
Weight of the second bullet, g.......................................27
Length of a cartridge, mm............................................147
Muzzle velocity of the first bullet, m/s..........................730
Muzzle velocity of the second bullet, m/s.....................700
 
 

    Double bullet cartridges 12.7 1SL and 12.7 1SLT (tracer) have been developed at TSNHTOCHMASH and accepted for Air Forces supply at 1985. Such cartridges and corresponding weapon creation has been caused by necessity of substantial increase of machine gun fare density on the ground targets from combat helicopters with the aim to increase target defeat probability.
     These cartridges are applied to shooting from aviation quadruple machine guns YAkB-12.7 installed on combat helicopters Mi-24D and intended for defeat of military personnel ground unarmoursng technical equipment and fire weapon. 12.7 1SLT cartridge with tracer bullet is used in common with 12.7 1SL cartridge and provides fire correction and target designation apart from listed targets defeat.
     Both bullets of 12.7 1SL cartridges are armour piercing incendiary with steel core. A front bullet of 12.7 1SLT cartridge is the same as 12.7 1SL cartridge but a back bullet is incendiary tracing. A back bullet tip enters into flute of front bullet tail part when packaged. Fastening of the second bullet in a cartridge case is carried out by punching cartridge case in three places.
     12.7 1SL bullets have not painting.
     Painting of 12 7 1SLT bullet is a green head part.

Double-bullet cartridge - 12.7 1SL (9-A-4012) in the context of
Double-bullet cartridge - 12.7 1SL (9-A-4012) in the context of

Bullet double-bullet cartridge 12.7 1SLT
Bullet double-bullet cartridge 12.7 1SLT

Sniper cartridge 12.7 SN (7N34)

Sniper cartridge 12.7 SN (7N34)
Sniper cartridge 12.7 SN (7N34)

     
  General properties of cartridges 12.7 SN

Weight of a cartridge, g...............................................147
Weight of a bullet, g......................................................59
Length of a cartridge, mm............................................147
Muzzle velocity, m/s.....................................................785
 
 

    Interest lo the large-caliber sniper weapon has considerably increased all over the world at 1990s. In the West such weapon often name as anti-materiel rifle that is a rifle for armaments and military equipment defeat. The new weapon creation in Russia has started only at the end of 1990 s.
     The sniper large-caliber cartridge was developed at TSNHTOCHMASH with participation of Novosibirsk and Ulyanovsk cartridge Works. It is intended for shooting from sniper rifles and provides defeat of military personnel, ground unarmouring and fight armouring weapons and equipment at distance up to 1500 m.
     The sniper cartridge bullet has compound core consisting of a steel and lead part. The steel core is located in a bullet head part. It is executed from heat-strengthened tool steel and provides light armouring weapons and equipment defeat at distance up to 1500 m.
     Manufacture of a cartridge has begun at the beginning of 2000 s firstly at Novosibirsk and then at Ulyanovsk cartridge Works.
     Sniper cartridges have not distinctive painting.

Bullet sniper cartridge 12.7 CH (7N34)
Bullet sniper cartridge 12.7 CH (7N34)

 

12.7 mm Mart cartridge 12.7 BLANK (7H1)

12.7 mm Mart cartridge 12.7 BLANK (7H1)
12.7 mm Mart cartridge 12.7 BLANK (7H1)

    Blank cartridges are intended for shooting sound effect creation from large-caliber machine guns during personnel trailing.
     The attachments for blank shooting (muzzle adapter and bushes into machine gun receiver and m cartridge box) ensuring the functioning mobile parts of weapon automatic are used for shooting by blank cartridges. The shot is accompanied by sound, flame flash and smoke.
     The blank cartridge differs from live cartridge due to bullet absence and cartridge case muzzle form made like hemisphere for supporting seating cartridge to cartridge chamber. Muzzle of cartridge case is closed by special cardboard cap. The blank cartridge is shorter then live cartridge. Its length is 112 mm. Blank cartridges are issued with a brass cartridge case.

 

Dummy cartridge 12.7 UCh (7H2)

Dummy cartridge 12.7 UCh (7H2)
Dummy cartridge 12.7 UCh (7H2)

   Dummy cartridge is intended for training of manipulation rules with cartridges, machine gun cartridge belts equipment and weapon charging technique and firing of a shot.
     12.7 UCh cartridge is performed due to usage of the basic details of 12.7 B-32 cartridge but does not contain a propelling powder and has inefficient percussion cap fuse. Cartridge is produced with bimetallic or steel cartridge case.
     Hardening of bullet fastening in muzzle of a cartridge case is provided by additional compression muzzle along a bullet in order to prevent its loss during training of weapon loading.
     The bullet of dummy cartridge has not distinctive painting but four symmetrically located longitudinal flutes are executed on cartridge case of a cartridge.