The 7.5×55mm Swiss or GP 11 (or unofficially 7.5×55mm Schmidt Rubin) is a cartridge developed for the Swiss Army by Lt. Col. Eduard Rubin for rifles based on Rudolf Schmidt's action design. The ammunition used by the Schmidt-Rubin Model 1889 rifle was one of the first to use 7.5 mm copper jacketed rounds similar to those used today. The GP90 7.5×53.5mm round designed by Colonel Rubin was revolutionary in that the most popular military calibres used in Europe at the time were around 12.7 mm as opposed to 7.5 mm of the Schmidt-Rubin ammunition. Oddly enough the round was "paper patched" meaning the actual bullet was wrapped around by a piece of paper, much like cotton patches were placed around the bullet of a musket. Paper patching the round was supposed to aid in the gas seal of the bullet
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| - The 7.5×55mm Swiss or GP 11 (or unofficially 7.5×55mm Schmidt Rubin) is a cartridge developed for the Swiss Army by Lt. Col. Eduard Rubin for rifles based on Rudolf Schmidt's action design. The ammunition used by the Schmidt-Rubin Model 1889 rifle was one of the first to use 7.5 mm copper jacketed rounds similar to those used today. The GP90 7.5×53.5mm round designed by Colonel Rubin was revolutionary in that the most popular military calibres used in Europe at the time were around 12.7 mm as opposed to 7.5 mm of the Schmidt-Rubin ammunition. Oddly enough the round was "paper patched" meaning the actual bullet was wrapped around by a piece of paper, much like cotton patches were placed around the bullet of a musket. Paper patching the round was supposed to aid in the gas seal of the bullet
- 7.5 mm Swiss cartridges have been in Swiss Army service since 1889 in their Schmidt-Rubin Model 1889 rifles. Originally using a semi-smokeless powder the cartridge was known as the Gewehrpatrone 1890 (GP90). It was discovered that the primer of GP90 ammunition was far too corrosive so it was updated in 1903 to the GP90/03 cartridge.
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| dbkwik:military/pr...iPageUsesTemplate
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| dbkwik:vietnam-war...iPageUsesTemplate
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| BW
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- 150(xsd:integer)
- 174(xsd:integer)
- 180(xsd:integer)
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| - Two 7×57 cartridges next to a 7.5×55mm / GP 11 , .308 Win and .223 Rem
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- 2560(xsd:integer)
- 2570(xsd:integer)
- 2820(xsd:integer)
- 3000(xsd:integer)
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| Variants
| - GP90, GP90/03, GP90/23, GP 11
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| abstract
| - 7.5 mm Swiss cartridges have been in Swiss Army service since 1889 in their Schmidt-Rubin Model 1889 rifles. Originally using a semi-smokeless powder the cartridge was known as the Gewehrpatrone 1890 (GP90). It was discovered that the primer of GP90 ammunition was far too corrosive so it was updated in 1903 to the GP90/03 cartridge. While the scarcity of reloadable cartridge cases makes the 7.5 mm Swiss problematic for US shooters, large numbers of surplus rifles - especially the Model 1889 - have been imported. Reloadable cases can be easily produced by reforming .284 Winchester brass. Case rims will be slightly undersized, but this presents no problems so long as the rifle's extractor is in good condition. This allows the handloader to produce a GP90 load that is safe for the Schmidt-Rubin Model 1889 rifle.
- The 7.5×55mm Swiss or GP 11 (or unofficially 7.5×55mm Schmidt Rubin) is a cartridge developed for the Swiss Army by Lt. Col. Eduard Rubin for rifles based on Rudolf Schmidt's action design. The ammunition used by the Schmidt-Rubin Model 1889 rifle was one of the first to use 7.5 mm copper jacketed rounds similar to those used today. The GP90 7.5×53.5mm round designed by Colonel Rubin was revolutionary in that the most popular military calibres used in Europe at the time were around 12.7 mm as opposed to 7.5 mm of the Schmidt-Rubin ammunition. Oddly enough the round was "paper patched" meaning the actual bullet was wrapped around by a piece of paper, much like cotton patches were placed around the bullet of a musket. Paper patching the round was supposed to aid in the gas seal of the bullet.
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