Inscrit le: 18 Oct 2017
Moyenne de points: 6,16
|Posté le: Jeu 21 Déc - 13:22 (2017) Sujet du message: Bowling ball mortar
Here's a project I recently finished:
Its a functioning replica of a 1844 Costal Defense mortar built mostly with about 450 lbs. of 1/4" plate,
a 300 cu.ft. gas cylinder, and a 7" section of 6" roundstock for the breech plug/powder chamber.
Using a 1/4 pound charge of Black Powder, these will shoot a bowling ball about 500 yards.
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