Two Allies, Two Cartridges, and One Very Big Logistics Headache
By WWI, the Allies were in a strange position: the British were firing .311-inch .303, the Americans .308-inch .30-06. Same side, different bullets.
Weapons
Swiss Engineering Marvel: The Story of the World’s Largest Rifle
Swiss engineering once gave birth to an awe-inspiring marvel: the world’s largest rifle that could be fired by a single soldier