Blackpowder Mortar & Cannon by Seacoast Artillery
I have a 20 inch cannon (including knob on the breach) made of 1018 steel, breach end is 3.5” diameter and muzzle is 3” in diameter, bore is 1” by 16”. My question is can I safely bore this to 1.70 for golf ball projectiles? Should I bore it to only 10 to 12 inches to leave a powder chamber? Or...