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The 7.5×55mm Swiss or 7,5mm GP 11 (or unofficially 7.5×55mm Schmidt–Rubin) is a cartridge developed for the Swiss Army. It originated from the Gewehrpatrone 1890 (7.5×53.5mm) developed in 1889 by mechanical engineer Lt. Col. Eduard Rubin for rifles based on Rudolf Schmidt's action design. The 7.5×55mm Swiss GP 11 cartridge is similar in ...
The MG 11 was a water-cooled heavy machine gun and mounted on a tripod. It was chambered for 7.5x55 mm GP 11 ammunition and came into service with the army, cavalry and was also used in fortresses, tanks and on airplanes of the Swiss Army. The gun body was the same as in German DWM 1909: a slightly modified design, which was lighter than the ...
An improvement over the original 1889 version of the Schmidt–Rubin rifle, the Swiss M1911 placed the locking lugs in the middle of the bolt, rather than at the rear, strengthening the action and allowing a more powerful cartridge, the Gewehrpatrone 11 or GP 11 to be used. It is distinguished from the 96/11 rifle by a curved buttplate and by a ...
The Swiss Military manual for the Karabiner Modell 31 using standard issue 7.5×55mm Swiss GP 11 ball ammunition in a fixed mounting mentions the expected accuracy of fire at various ranges. The following table lists accuracy statistics for typical in service K31 rifles firing 7.5×55mm Swiss GP 11 service ammunition.
GP 11 (7.5×55mm Swiss) Manufactured by the Waffenfabrik Bern, it is a derivative of the MG 42. It is used as: Secondary weapon on the Panzer 87 tank; Primary weapon on the Mowag Eagle 1 / 2 (Aufklfz 93 and 97), installed on the MBK2 observation turret. M2 Browning "Maschinengewehr 63 / 93" (Mg 63/93) United States Belgium. Heavy machine gun ...
In military service, the Swiss Army issued the Stgw. 57 as the personal weapon of every soldier. In the course of service, the Stgw. 57 replaced the following four weapons: (i) the K31 rifle, (ii) the Suomi M-31 /Mp. 43/Mp. 44 submachine gun, (iii) the Lmg 25 light machinegun, and (iv) in the 1974–1977 period, replaced the Zf. Kar. 55 sniper ...
The rifled barrel has 6 right-hand grooves and the Swiss Army specification 254 mm (1:10 in) rifling twist rate is optimized for Swiss military GP 90 ammunition. An export-oriented 5.56×45mm NATO barrel configuration with a 178 mm (1:7 in) twist rate is also available, to adequately stabilize the relatively long NATO L110/M856 5.56×45mm NATO ...
Swiss 7.5×55mm GP 11 Full Metal Jacket, Armor Piercing, and Tracer projectiles. In 1911, Switzerland adopted the 7.5×55mm GP 11 cartridge loaded with a 11.3 grams (174 gr) spitzer full metal jacket bullet. Besides a pointed nose, the GP 11 bullet also had a boat tail to further lower the drag coefficient (C d).