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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 mechanical engineer 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 Rubin was revolutionary in that the most popular military calibres used in Europe at the time were around 10 to 14 mm as opposed to 7.5 mm of the Schmidt–Rubin ammunition. The 7.5x55mm Swiss cartridge is similar in appearance to the slightly smaller 7.5x54mm French round though the two are not interchangeable.
I sold my K-31 and then discovered I still had some 7.5 Swiss in the cupboard. I no longer have any use for them but maybe you do!
I've got two full boxes plus an open box of 5 for a total of 45 rounds.
I live on the East side of Portland and can meet up in any mutually convenient...
Selling my 1927 Schmidt Rubin 1911 Carbine (K11). It is all matching with its original muzzle cap and sling. The bore is nearly perfect. The stock shows typical dings, dents, handling marks, etc, but has no cracks or splits and is snug. The bluing/bolt is very good with some edge wear...
Selling my 1951 Swiss K31. All matching, mirror bore, includes real Swiss sling (no repros). Right side of the stock has a small Swiss Crest. This is the most accurate milsurp I have ever shot.
First $400 cash takes it. Would consider trade for bone stock Glock 43 or 43x in excellent condition...