Thanks for the compliments. The barrel length is 44" less handle and vent shield, 1.75" bore, 4.5" diameter breech with a 1/2 degree taper cut from the front of the breech band to the muzzle, 1.75" trunnion diameter. Wheel diameter is 28" wheels, carriage length is about 48". I started with a 4 foot piece of 3-1/2"od x .875 wall 1026 cold drawn seamless for the main tube. Dom