40mm cannon
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Gun Name 40mm cannon
Year 2011
Make
Model
2011
2011   2011   2011
History Picked up a 40mm rifled barrel section and converted it to black powder. Breech plug is a 3" long .002 press fit that has been J welded, then a 4140 heat treated cap went over that. Welded to the outside diameter of the tube and plug welded to the breech plug. Trunnions were machined from 4140 round bar and welded to the sides of the barrel. The tube is 4' long and weighs around 100lbs. Also working on a carriage made from southern yellow pine.
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