Been re banding my 3 inch 20cwt projectiles with missing bands which have been very successful so far. Managed to master the welding of copper to copper making the banding rings with a gas torch and have been successful crimping them in place. Now i need the correct diameter of the 3inch projectile measured at the bands which so far i have a diameter of 76.2mm which is the diameter of the unbranded projectile, anyone have the correct size at the bands of a banded projectile and a profile how the band is shaped.