"Whether the British Small Arms Committee consulted with Rubin regarding this round is somewhat obscure, but I would be willing to bet that it was tested by the Brits with his full knowledge and cooperation."
As I said, I really wonder about that given his place in the Swiss military and the nature of the international accords in place at that time.
According to the various treaties that came out of the Congress of Vienna, the ONLY formal military contact Switzerland was allowed was with the Vatican regarding the Swiss guard. That's what led to the thriving Swiss arms industry. It wasn't until World War I and the after effects of that that the Swiss started actively going outside of those limitations.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.