Cast-iron bombards, balls & bombs
1814 Battle Of Plattburgh 22 Pound Cannon Ball
Original U.S. Civl War Borman 12lb Cannon Ball - Dug Near Battle
How were cannonballs made? - Quora
Wrought (!) and cast iron cannon balls, 16th century
Round shot - Wikipedia
Found this cannonball while metal detecting! Safe to keep? : r
Ambrose Antique Guns, Antique Firearms, Guns, Firearms, Antique
19th Century Cast Iron Miniature Cannon With Customized Bulled Mold
Cast Iron Cannon Ball 19th Century Diameter 5”.