Early matchlock guns are extremely rare ... Both breech and muzzle loaded guns used. 1862 - The Gatling Gun is invented. 1869 - Center-fire cartridge introduced. 1870-1871- The Franco-German ...

When, in 1861, Dr Richard Gatling patented the Gatling gun – one of the first reliable ... One of Maxim's early prototypes could fire 666 rounds in a minute – around 11 bullets every second.