List of the largest cannon by caliber
= List of the largest cannon by caliber
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Here is a list of some of the largest cannons by caliber, notable for their size and historical significance: 1. **Dora and Gustav (Germany)** - These railway guns were built during World War II and had a caliber of 800 mm (31.5 inches). They were among the heaviest and largest artillery pieces ever constructed, specifically designed for long-range bombardment.