What is the heaviest projectile ever successfully used in battle

File:Schwerer Gustav Grenade.JPG - Wikimedia Commons

Rail Cannon 80 cm (E) Schwerer Gustav (Dora), Military Wiki

Schwerer Gustav - BattleTechWiki

What was the most popular type of gun in Germany before World War

Landkreuzer P. 1500 Monster, Kylar Wiki

SimplePlanes Schwerer Gustav

8.8 cm KwK 43 - Wikiwand

Solved Х O Courrier - choucran X W The Black Code.do X $

Could a Nazi Super Gun change the tide of war in Soviet and quickly destroy UK to avoid entry of US in WW2 which led to two front wars? - Quora

Schwerer Gustav railway cannon made using Create: Big Cannons. This took a lot of accidentally blowing up my build to make, enjoy. : r/feedthebeast