Eduard Rubin
Lieutenant Colonel Eduard Rubin was a Swiss
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 firearm designer who is most notable for inventing the full metal jacket bullet
Full metal jacket bullet
A full metal jacket is a bullet consisting of a soft core encased in a shell of harder metal, such as gilding metal, cupronickel or less commonly a steel alloy. This shell can extend around all of the bullet, or often just the front and sides with the rear left as exposed lead...

 in 1882. His most famous cartridge was the 7.5x55mm Swiss. He served as director of the Swiss Federal Ammunition Factory and Research Center in Thun
Thun is a municipality in the administrative district of Thun in the canton of Bern in Switzerland with about 42,136 inhabitants , as of 1 January 2006....

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