Were cannonballs explosive or were they just projectiles? - Quora
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Round shot - Wikipedia
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Cannonballs: Size Matters | WIRED
Round shot - Wikipedia
Cannon Ball Fired at Waterloo - Age of Revolution
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Cannonball problem - Wikipedia
Cannon Ball Fired at Waterloo - Age of Revolution
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Grand Canyon CB6-4-B 4-Piece Black Cannon Ball Set, 6-Inches
