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9×25mm Super Auto G

Austrian pistol cartridge

Field	Value
name	9×25mm Super Auto G
origin	Austria
type	Pistol
design_date	1991
parent	[10mm Auto](10mm-auto)
case_type	Rimless, bottleneck
is_SI_specs	yes
bullet	9.03
land	8.82
neck	9.63
shoulder	10.72
base	10.80
rim_dia	10.85
rim_thick	1.40
case_length	25.35
length	32.70
case_capacity	1.60
rifling	250 mm (1 in 9.84 in)
primer	Large pistol
max_pressure	255.00

The 9×25mm Super Auto G, officially known as the 9 × 25 Super Auto G by C.I.P. and unofficially also known as the 9 × 25 Super Auto Grillmeyer, is an Austrian pistol cartridge.

The 10mm Auto cartridge has functioned as the parent case for the 9×25mm Super Auto G, which is essentially a necked-down version of the 10mm Auto. The 10mm 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 bullets result in very high muzzle velocities.

History

The cartridge got C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) certified in 1991. The 9×25mm 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 10mm Auto brass by reshaping the shoulder and neck, and handloading it with 9 mm calibre bullets.

Cartridge dimensions

The 9×25mm Super Auto G has 1.60 ml (25.0 grains) H2O cartridge case capacity.

9×25mm Super Auto G maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm).

Americans 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 9×25mm 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 9×25mm Dillon pistol wildcat cartridge is probably the closest ballistic twin of the 9×25mm Super Auto G. These cartridges are both necked down 9 mm variants of the 10mm Auto cartridge though they vary dimensionally.

References

"C.I.P. decisions, texts and tables - free current C.I.P. CD-ROM version download (ZIP and RAR format)".

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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