Hiter, Speer and entourage mesmerized at the Schwerer Gustav. Largest and Heaviest artillery ever used in combat; ca. 1941
Also know as Dora, Krupp was responsible for its development. It saw very little combat as the gun proved to be a logistical nightmare. Stands as the largest-calibre rifled weapon ever used in combat, the heaviest artillery piece ever built by weight and fired the heaviest shells of any artillery.
The Schwerer Gustav could fire armor-piercing rounds weighing over 7,000kg (~15,000lb) with a muzzle velocity of ~700 m/s (~2,400 ft/s)