7.92x24mm
Encyclopedia
The 7.92×24 mm cartridge is a pistol cartridge designed in Belgium by Rik Van Bruaene of VBR-Belgium.
The design objective was the development of a cartridge for use in Personal Defence Weapons (PDW)
, and for use in pistols, submachine guns and carbines. The technical specifications of the 7.92×24 round are much closer to the 9×19 mm NATO pistol round than that of the 4.6×30 mm
and 5.7×28 mm rounds more commonly used in PDWs. The 7.92×24 mm is specially designed to fulfill a multicaliber role in the existing 9×19mm and .45 Auto frame platforms.
. The 7.92×24mm caliber is available on the civilian, law enforcement and military markets.
The 7.92×24mm is shorter than the more ubiquitous 4.6×30mm and 5.7×28mm chanberings more commonly used in PDWs, this to allow usage in compact and sub-compact weapons. In order to be compatible with the 9×19mm and .45 Auto frame platforms, the 7.92×24 mm caliber case has a special selected length of 24mm and uses different bullet types for each frame platform to fit their different lengths of 29.6mm and 32.4mm.
The round uses one standard case for both frame platforms and two series of bullets—the "S" cartridge is used to fit in the 9×19mm frame platforms whilst the "N" cartridge is used in the .45 Auto frame platforms.
To prevent ammunition supply problems caused by the launch of a new caliber, the 7.92×24mm caliber uses a straight case, which is based on a shortened .30 Carbine
case. These cases are widely available all over the world, and can be easy modified for the 7.92×24 mm projectile.
The 7.92×24mm has 0.926 ml
(14.26 grains
) H2O cartridge case capacity.
The common rifling
twist rate for this cartridge is 254 mm (1 in 10 in), 6 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm and the primer type
is small pistol.
The 7.92×24 N cartridge has a maximum length of 32.4 mm. According to the official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives
) guidelines the 7.92×24 mm case can handle up to 3200 Bar (46412 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.
The 7.92×24mm has 0.926 ml
(14.26 grains
) H2O cartridge case capacity.
The common rifling
twist rate for this cartridge is 254 mm (1 in 10 in), 6 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm and the primer type
is small pistol. The 7.92×24 S cartridge has a maximum length of 29.6 mm.
The 7.92×24 mm 3P cartridge contains three projectiles. It is fired from a smoothbore barrel equipped firearm. The impact of the three projectiles are comparable with the impact of three pellets of a 12-gauge buckshot round.
7.92×24 mm BAP (Brass Armor Piercing)
This variety has different types of brass monoblock projectiles which have armor piercing capabilities at soft body armor level II and IIIA.
Although Brass Armor Piercing bullets for military use are common, the use of Brass Armor Piercing bullet for law enforcement is very controversial - according to international agreements concerning law enforcement ammunition, it is prohibited for a police officer to use bullets which can penetrate their own bulletproof vest .
The 7.92×24mm BAP cartridge is aimed at a police market where armor piercing bullets with a limited penetration are needed. Different types with different bullet weights exist.
7.92×24 mm AP-HPF (Armor Piercing - Hollow Point Fragmenting)
Most law enforcement agencies prefer a bullet with greater stopping power like a hollow point bullet, traditional armor piercing bullets have a comparably low stopping effect. The 7.92×24 AP-HPF 5.7 uses a 5.7 mm hardened steel penetrator and a brass fragmenting hollow point sabot. The 5.7 hardened steel penetrator is able to defeat body armor and the fragmenting hollow point sabot increases the stopping power against unprotected targets.
The objective of the 7.92×24 AP-HPF 5.7 cartridge is to compete with the stopping power of the big .45 JHP bullets and also with the drill performance of the small PDW calibers 4.6×30 mm and 5.7×28 mm.
7.92×24 mm FRA (Frangible) cartridges
The 7.92×24 mm FRA (Frangible) bullets are designed to break-up at impact. They can be used for indoor shooting.
The 7.92×24mm AP cartridges intended for the military market are based on a new patented bullet technology designed by Rik Van Bruaene. The military AP bullet contains a brass sabot and a hardened steel penetrator. This technology can be used in different calibers. Different dimensions of sabots and penetrators exist and many combinations of sabot weight and caliber are possible.
Problems with the Geneva Conventions.
To increase the stopping power of the 7.92 AP bullets, some bullet types are provided with a penetrator/sabot combination, which separates by impact at a body of the opponent. This separation of the penetrator and sabot in the body of the opponent, causes a larger wound cavity and doubles the chance to hit a vital organ. This is similar to the 2-part fragmenting bullets. Although there is much support for this increased lethality, some people consider this separation effect to be in breach Geneva Conventions
. The separation strength from the sabot and penetrator can be changed by adapting the sabot identities. Other penetrator/sabot combinations do not have a separation on impact with a human body.
7.92×24mm S
The design objective was the development of a cartridge for use in Personal Defence Weapons (PDW)
Personal defense weapon
A personal defense weapon is a compact semi-automatic or fully automatic firearm similar in most respects to a submachine gun, but firing an armor-piercing rifle round, giving a PDW better range, accuracy and armor-penetrating capability than submachine guns, which fire pistol-caliber cartridges...
, and for use in pistols, submachine guns and carbines. The technical specifications of the 7.92×24 round are much closer to the 9×19 mm NATO pistol round than that of the 4.6×30 mm
HK 4.6×30mm
The HK 4.6×30mm cartridge is a type of ammunition used in the Heckler & Koch MP7 Personal Defense Weapon and by the HK UCP pistol. It is designed to minimize weight and recoil while increasing penetration of body armor. It features a bottlenecked case and a pointed, steel-core, brass-jacketed...
and 5.7×28 mm rounds more commonly used in PDWs. The 7.92×24 mm is specially designed to fulfill a multicaliber role in the existing 9×19mm and .45 Auto frame platforms.
Design objectives
The design objectives of the 7.92×24mm project were to create a new self defence caliber with great stopping power in a pistol and sufficient dimensions for use in a PDW or carbine style rifle. The 7.92×24mm round exceeds the minimum FBI penetration requirements—12-inch penetration when fired into ballistic gelatinBallistic gelatin
Ballistic Gelatin is a testing medium scientifically correlated to swine muscle tissue , in which the effects of bullet wounds can be simulated. It was developed and improved by Martin Fackler and others in the field of wound ballistics. Ballistic gelatin is a solution of gelatin powder in water...
. The 7.92×24mm caliber is available on the civilian, law enforcement and military markets.
The 7.92×24mm is shorter than the more ubiquitous 4.6×30mm and 5.7×28mm chanberings more commonly used in PDWs, this to allow usage in compact and sub-compact weapons. In order to be compatible with the 9×19mm and .45 Auto frame platforms, the 7.92×24 mm caliber case has a special selected length of 24mm and uses different bullet types for each frame platform to fit their different lengths of 29.6mm and 32.4mm.
7.92×24 mm case
.30 Carbine
The .30 Carbine is the cartridge used in the M1 Carbine introduced in the 1940s. It is an intermediate round designed to be fired from the M1 carbine's 18-inch barrel.-History:...
case. These cases are widely available all over the world, and can be easy modified for the 7.92×24 mm projectile.
7.92×24 N cartridge dimensions
The 7.92×24 N cartridge is intent for the use in the .45 Auto frame platforms.The 7.92×24mm has 0.926 ml
Litre
pic|200px|right|thumb|One litre is equivalent to this cubeEach side is 10 cm1 litre water = 1 kilogram water The litre is a metric system unit of volume equal to 1 cubic decimetre , to 1,000 cubic centimetres , and to 1/1,000 cubic metre...
(14.26 grains
Grain (measure)
A grain is a unit of measurement of mass that is nominally based upon the mass of a single seed of a cereal. From the Bronze Age into the Renaissance the average masses of wheat and barley grains were part of the legal definition of units of mass. However, there is no evidence of any country ever...
) H2O cartridge case capacity.
The common rifling
Rifling
Rifling is the process of making helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis...
twist rate for this cartridge is 254 mm (1 in 10 in), 6 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm and the primer type
Percussion cap
The percussion cap, introduced around 1830, was the crucial invention that enabled muzzleloading firearms to fire reliably in any weather.Before this development, firearms used flintlock ignition systems which produced flint-on-steel sparks to ignite a pan of priming powder and thereby fire the...
is small pistol.
The 7.92×24 N cartridge has a maximum length of 32.4 mm. According to the official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives
Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives
The Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives is an international organisation whose members are 14 states, mainly European....
) guidelines the 7.92×24 mm case can handle up to 3200 Bar (46412 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.
7.92×24 S cartridge dimensions
The 7.92×24 S cartridge is intended for use in the 9×19mm frame platforms.The 7.92×24mm has 0.926 ml
Litre
pic|200px|right|thumb|One litre is equivalent to this cubeEach side is 10 cm1 litre water = 1 kilogram water The litre is a metric system unit of volume equal to 1 cubic decimetre , to 1,000 cubic centimetres , and to 1/1,000 cubic metre...
(14.26 grains
Grain (measure)
A grain is a unit of measurement of mass that is nominally based upon the mass of a single seed of a cereal. From the Bronze Age into the Renaissance the average masses of wheat and barley grains were part of the legal definition of units of mass. However, there is no evidence of any country ever...
) H2O cartridge case capacity.
The common rifling
Rifling
Rifling is the process of making helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis...
twist rate for this cartridge is 254 mm (1 in 10 in), 6 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm and the primer type
Percussion cap
The percussion cap, introduced around 1830, was the crucial invention that enabled muzzleloading firearms to fire reliably in any weather.Before this development, firearms used flintlock ignition systems which produced flint-on-steel sparks to ignite a pan of priming powder and thereby fire the...
is small pistol. The 7.92×24 S cartridge has a maximum length of 29.6 mm.
Cartridge varieties
7.92×24 mm 3PThe 7.92×24 mm 3P cartridge contains three projectiles. It is fired from a smoothbore barrel equipped firearm. The impact of the three projectiles are comparable with the impact of three pellets of a 12-gauge buckshot round.
7.92×24 mm BAP (Brass Armor Piercing)
This variety has different types of brass monoblock projectiles which have armor piercing capabilities at soft body armor level II and IIIA.
Although Brass Armor Piercing bullets for military use are common, the use of Brass Armor Piercing bullet for law enforcement is very controversial - according to international agreements concerning law enforcement ammunition, it is prohibited for a police officer to use bullets which can penetrate their own bulletproof vest .
The 7.92×24mm BAP cartridge is aimed at a police market where armor piercing bullets with a limited penetration are needed. Different types with different bullet weights exist.
7.92×24 mm AP-HPF (Armor Piercing - Hollow Point Fragmenting)
Most law enforcement agencies prefer a bullet with greater stopping power like a hollow point bullet, traditional armor piercing bullets have a comparably low stopping effect. The 7.92×24 AP-HPF 5.7 uses a 5.7 mm hardened steel penetrator and a brass fragmenting hollow point sabot. The 5.7 hardened steel penetrator is able to defeat body armor and the fragmenting hollow point sabot increases the stopping power against unprotected targets.
The objective of the 7.92×24 AP-HPF 5.7 cartridge is to compete with the stopping power of the big .45 JHP bullets and also with the drill performance of the small PDW calibers 4.6×30 mm and 5.7×28 mm.
7.92×24 mm FRA (Frangible) cartridges
The 7.92×24 mm FRA (Frangible) bullets are designed to break-up at impact. They can be used for indoor shooting.
7.92×24 mm cartridges for the military market
7.92×24mm Armor PiercingThe 7.92×24mm AP cartridges intended for the military market are based on a new patented bullet technology designed by Rik Van Bruaene. The military AP bullet contains a brass sabot and a hardened steel penetrator. This technology can be used in different calibers. Different dimensions of sabots and penetrators exist and many combinations of sabot weight and caliber are possible.
Problems with the Geneva Conventions.
To increase the stopping power of the 7.92 AP bullets, some bullet types are provided with a penetrator/sabot combination, which separates by impact at a body of the opponent. This separation of the penetrator and sabot in the body of the opponent, causes a larger wound cavity and doubles the chance to hit a vital organ. This is similar to the 2-part fragmenting bullets. Although there is much support for this increased lethality, some people consider this separation effect to be in breach Geneva Conventions
Geneva Conventions
The Geneva Conventions comprise four treaties, and three additional protocols, that establish the standards of international law for the humanitarian treatment of the victims of war...
. The separation strength from the sabot and penetrator can be changed by adapting the sabot identities. Other penetrator/sabot combinations do not have a separation on impact with a human body.
Weapons chambered
7.92×24mm N- PSW-Multi-caliber pistol
7.92×24mm S
- Browning Hi-PowerBrowning Hi-PowerThe Browning Hi-Power is a single-action, 9 mm semi-automatic handgun. It is based on a design by American firearms inventor John Browning, and completed by Dieudonné Saive at Fabrique Nationale of Herstal, Belgium. Browning died in 1926, several years before the design was finalized...
7.92 - Glock-VBR 7.92 pistol
- Prototype VBR-Belgium PDWVBR-Belgium PDWThe VBR-PDW is a personal defense weapon chambered in the 7.92x24mm round and is designed by Rik Van Bruaene. It uses the double action firing mechanism from a Beretta M92F Pistol and magazines from Glock pistols. As of 2010, it is still at prototype stage. It has a retractable buttstock to...
and VBR-Belgium CQBWVBR-Belgium CQBWThe CQBW is a semi automatic pistol manufactured by VBR-Belgium. It is chambered for the 7.92x24mm round but can also be converted to fire 4.6x30mm or 5.7x28mm rounds.-References:* * -See also:* 7.92x24mm* FN Five-seven* Heckler & Koch UCP* QSZ-92...
Sidearms