A) 1839 B) 1899 C) 1909 D) 1919
B - i guess. I thought my reloading manual said 1898, but I could be off a year. (Just bought a .357 mag revolver so I have been doing a lot of reading on reloading both carriages.)
I'm guessing D since it was a higher power version of an existing cartridge.
The answer is B) 1899 :)
I think ummmmm B
i bet C