Originally Posted by texaswoodworker
Oops, I have no idea where I got 7.65 Swiss.
Why on earth are there so many calibers that are extremely similar?
You were a European country that wanted the latest and best.
French started out w/ the 8mm Lebel, the Germans followed w/ 7.92x57 (8mm).
The spitzer race soon followed. Germany switched 7.92- .318 to .323.
Switzerland developed the 7.5x55. When the French looked for a replacement for the 8mm Lebel, .30 caliber was the rage, so the adopted the 7.5x54. The 1936Mas was very compact, surdy, and accurate. If you were 400 yards infront of the muzzle of one of these carbines, you had a big problem. The French did not have all of their troops armed with the Mas at the beginning of the war(II), that was a huge issue. The rest of the world took notice of the intermediate cartridge after the war, then it became more interesting. You always take the best of what someone else developed and change it slightly so they can't use it. 7.5x55, 7.5x54 (both use .308 bullets), became 7.62x51. We took notice.