IMHO the rumor about Mannlicher-Schoenauers in 9.3x53 Swiss is based on a misunderstanding. Both the 9.3x53 and it's rimmed twin were developed post-WW1, when the usual pre-war import of German and Austrian made guns and ammo came to a halt due to the Versailles and St.Germain "peace treaties". The only repeating rifles in 9.3x53 Swiss I have ever seen were all Mannlichers, but not Mannlicher-Schoenauers. Instead, they are on the rare, less than 8000 ever made, Swiss M93 Mannlicher cavalry carbine actions. These carbines were made under licence from Steyr by a Swiss arsenal and SIG. The M93 carbine used v.Mannlicher's straight pull action (same as the M90 and M95 Austro-Hungarian ones)combined with a Swiss type detacheable 6-shot box magazine. These M93 carbines were just, in 1919, declared obsolete, replaced by the M11 Schmidt-Rubin short rifle and the more powerfull 7.5x55 GP11 load. These M93 carbines, rebarreled or rebored to 9.3 mm, made light and handy hunting rifles for roe deer and chamoix, the only "big game" then in Switzerland. Remember, the use of the military 7.5x55 cartridge for hunting was prohibited in Switzerland and scope use was outlawed as unsporting.