Looking for Detaled Drawing with Dimensions on a 3” Ordnance Rifle, I have a 4.5” OD x 3.125” ID x 66” Long, Hot Rolled, Seamless Steel Tube for a Barrel, I am looking to keeping the Barrel the same OD down the outside, and need dimensions for the Trunnions, and how far down the Barrel, and the Location and size of the Vent off the Breech. Please Help if you can.
Thanks,
BadBill