Eduard Alexander Rubin (17 July 1846 – 6 July 1920) was a
Swiss mechanical engineer who is most notable for having invented the
full metal jacket bullet in 1882. His most famous cartridge was the
7.5×55mm Swiss which was the standard ammunition for the
Schmidt–Rubin,
K31 and
Stgw 57 military rifles. His fully copper clad bullets were also the inspiration for the full metal jacket bullets introduced in 1886 for the
Lebel rifle. He served as director of the Swiss Federal Ammunition Factory and Research Center in
Thun.