pedrero

Bombs and carcasses were usual for mortar firing, but stone projectiles remained in use as late as 1800 for the pedrero class

Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America Albert Manucy

Third class guns fired stone balls to break and sink ships and defend batteries from assault; such guns included the pedrero, mortar, and bombard (fig. 23c, d).

Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America Albert Manucy

The third class of ordnance included the guns firing stone projectiles, such as the pedrero (or perrier, petrary, cannon petro, etc.), the mortars, and the old bombards like Edinburgh Castle's famous Mons Meg.

Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America Albert Manucy

The lightest charge seems to have been for the pedrero, which fired a stone ball.

Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America Albert Manucy

The small arc inside the bore indicates the powder chamber found in the pedrero and mortar.]

Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America Albert Manucy