7 cm Gebirgsgeschütz M 75

The 7 cm Gebirgsgeschütz M 75 was a mountain gun used by Austria-Hungary during World War I. Despite its 7 cm designation it actually fired a 66 mm (2.6 in) projectile. The Austro-Hungarian Army rounded up to the nearest centimeter for their designations. It was obsolete upon introduction as it had a bronze barrel and no recoil mechanism so it had to be relaid after every shot. The gun had an early form of Krupp horizontal sliding-block breech and it fired separate-loading, bagged charges and projectiles. Due to its low profile, its breech could recoil into the ground so its angle of elevation was restricted which was a significant handicap for a mountain gun which needed high angles of elevation. For transport, the Gebirgsgeschütz M 75 could be broken down into two loads.[1]

7 cm Gebirgsgeschütz M 75
A Gebirgsgeschütz M 75 in action with the Polish Legion.
TypeMountain gun
Place of origin Austria-Hungary
Service history
In service1875-1918
Used byAustria-Hungary
WarsWorld War I
Production history
DesignerŠkoda
Designed1875
ManufacturerŠkoda
Produced1875[1]
Specifications
Mass199 kg (439 lb)
Barrel length990 mm (3 ft 3 in) L/15
Width737 mm (2 ft 5 in)
Height644 mm (2 ft 1 in)
Crew4[1]
ShellSeparate-loading, bagged charges and projectiles
Shell weightShrapnel: 3 kg (6 lb 10 oz)
HE: 3 kg (6 lb 10 oz)
Canister: 2 kg (4 lb 7 oz)
Caliber66 mm (2.6 in)
BreechHorizontal sliding-block breech[1]
RecoilNone
CarriageBox trail
Elevation-10° to +24°
TraverseNone
Rate of fire6 rpm
Muzzle velocityFull charge: 291 m/s (950 ft/s)
Reduced charge: 181 m/s (590 ft/s)
Maximum firing rangeHE: 3 km (2 mi)
Shrapnel: 1.8 km (1 mi)[1]
  • The M 75's breech block.

References
  1. Ortner, M. (2007). The Austro-Hungarian Artillery from 1867 to 1918 : technology, organization and tactics. Wien: Militaria. ISBN 9783902526137. OCLC 232999331.
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