Excellent study on the complex steps in making a cartridge and why and how it was done. Even more amazing in the process was totally mechanical. The plants were as complex as a computer chip factory and a standardized plant was designed. It was no accident that the US 30-40 and later 30-06, the British 303, the Russian 7.62-54, the German-Austrian-Turkish 8 MM are all very similar in size and shape.
Cartridge Manufacture USA 1916 2015-08-29
A study of brass cartridge manufacturing in 1916