Double D : Again this came with the gun. So Tim and GunSmoke, note please don't confuse him with the talked about shop in CO. Tim has started building his own wheels they are ten spoke if you can not see them in the photo. They are not dished but are pretty tight. He did not heat the tire on but they are still a good fit. We will see what the Florida humidity and AC do to them.
I questioned him on construction before purchasing and he responded as such;
"James , I understand your trepidation , but , in 8 years of building Barrels , first for myself and friends , then for the Cannon loving Public , and over 500 Barrels later , I have never built a grenade ! My 2 shop Cannons have been abused in every way imaginable , and never a failure . My Barrels are Ordnance Steel , 7/16 " wall thickness , with a turned Breech Block that has a Graduated Powder Chamber Milled into the Block , sloped at 37 degrees into a 120 grain pocket that allows center of the ball firing . The Breech Block is then Pinned and welded into the Barrel .The Onion is then welded to the block and inside wall of the barrel using TIG Welding . A 5/16 thick steel tube is then welded to the firing area on the outside of the Barrel . This gives a wall thickness of 3/4 inches at the firing area . After this the Barrel is balanced and marked for Trunnion placement ."
He also listed the alloy as 4140. The chamber he talks about is approximately half and inch. So he exceeds the design for a howitzer by the 1:1:1 rule.