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Largest cannon by calibre

Largest cannon by calibre
Who
Tsar Pushka
Where
Russian Federation (Moscow,)
When
1586
The highest-calibre cannon ever constructed is the Tsar Pushka (Emperor of Cannons), which has a bore size of 890 mm (35 in) and a barrel length of 5.34 m (17 ft 6 in. It was cast in bronze by Andrei Chokhov (Russia) at Moscow’s Cannon Yard in 1586, and is now housed in the Kremlin, Moscow, Russia.