9x25mm Super Auto G
Encyclopedia
The 9x25mm Super Auto G, officially known as the 9 x 25 Super Auto G by C.I.P. and unofficially also known as the 9 x 25 Super Auto Grillmeyer, is an Austrian pistol cartridge.
The 10 mm Auto
cartridge has functioned as the parent case for the 9x25mm Super Auto G, which is essentially a necked-down version of the 10 mm Auto. The 10 mm Auto cartridge case was used for this since it has the capability to operate with relative high chamber pressures for its case capacity which, combined with smaller and hence lighter bullet
s result in very high muzzle velocities.
) certified in 1991. The 9x25mm Super Auto G is currently (2009) not commercially available and exists only as a C.I.P. datasheet. It might however still used by a few shooters who produce the cases from 10 mm Auto brass by reshaping the shoulder and neck, and handloading
it with 9 mm calibre bullets.
(25.0 grains
) H2O cartridge case capacity.
9x25mm Super Auto G maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm).
Americans would define the shoulder angle at alpha/2 ≈ 19.9 degrees. The common rifling
twist rate for this cartridge is 250 mm (1 in 9.84 in), 6 grooves, Ø lands = 8.82 mm, Ø grooves = 9.02 mm, land width = 2.49 mm and the primer type
is large pistol.
According to the official C.I.P. (Commission Internationale Permanente Pour L'Epreuve Des Armes A Feu Portative) guidelines the 9x25mm Super Auto G case can handle up to 255 MPa (36,985 psi) piezo pressure. In C.I.P. regulated countries every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P. pressure to certify for sale to consumers.
The American 9x25mm Dillon
pistol wildcat cartridge
is probably the closest ballistic twin of the 9x25mm Super Auto G. These cartridges are both necked down 9 mm variants of the 10 mm Auto
cartridge though they dimensionally vary.
The 10 mm Auto
10 mm Auto
The 10mm Auto is a semi-automatic pistol cartridge developed by Jeff Cooper and introduced in 1983 for the Bren Ten pistol. It was initially produced by ammunitions manufacturer FFV Norma AB of Åmotfors, Sweden.Although it was selected by the F.B.I. for use in the field following the 1986 F.B.I...
cartridge has functioned as the parent case for the 9x25mm Super Auto G, which is essentially a necked-down version of the 10 mm Auto. The 10 mm Auto cartridge case was used for this since it has the capability to operate with relative high chamber pressures for its case capacity which, combined with smaller and hence lighter bullet
Bullet
A bullet is a projectile propelled by a firearm, sling, or air gun. Bullets do not normally contain explosives, but damage the intended target by impact and penetration...
s result in very high muzzle velocities.
History
The cartridge got C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu PortativesCommission 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....
) certified in 1991. The 9x25mm Super Auto G is currently (2009) not commercially available and exists only as a C.I.P. datasheet. It might however still used by a few shooters who produce the cases from 10 mm Auto brass by reshaping the shoulder and neck, and handloading
Handloading
Handloading or reloading is the process of loading firearm cartridges or shotgun shells by assembling the individual components , rather than purchasing completely assembled, factory-loaded cartridges...
it with 9 mm calibre bullets.
Cartridge dimensions
The 9x25mm Super Auto G has 1.60 mlLitre
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...
(25.0 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.
9x25mm Super Auto G maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm).
Americans would define the shoulder angle at alpha/2 ≈ 19.9 degrees. 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 250 mm (1 in 9.84 in), 6 grooves, Ø lands = 8.82 mm, Ø grooves = 9.02 mm, land width = 2.49 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 large pistol.
According to the official C.I.P. (Commission Internationale Permanente Pour L'Epreuve Des Armes A Feu Portative) guidelines the 9x25mm Super Auto G case can handle up to 255 MPa (36,985 psi) piezo pressure. In C.I.P. regulated countries every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P. pressure to certify for sale to consumers.
The American 9x25mm Dillon
9x25 Dillon
The 9x25mm Dillon, also known as the 9x25 Dillon by Dillon Precision, is a pistol wildcat cartridge developed by employees working at Dillon Precision for use in USPSA/IPSC Open guns. The cartridge is made by necking down a 10mm Auto case to 9 mm....
pistol wildcat cartridge
Wildcat cartridge
A wildcat cartridge, or wildcat, is a custom cartridge for which ammunition and firearms are not mass produced. These cartridges are often created in order to optimize a certain performance characteristic of an existing commercial cartridge.Developing and using wildcat cartridges does not...
is probably the closest ballistic twin of the 9x25mm Super Auto G. These cartridges are both necked down 9 mm variants of the 10 mm Auto
10 mm Auto
The 10mm Auto is a semi-automatic pistol cartridge developed by Jeff Cooper and introduced in 1983 for the Bren Ten pistol. It was initially produced by ammunitions manufacturer FFV Norma AB of Åmotfors, Sweden.Although it was selected by the F.B.I. for use in the field following the 1986 F.B.I...
cartridge though they dimensionally vary.