Patent ID: 7707761
Filing Date: 2010-05-04
Classification: F41A

Abstract:
1. A method for manufacturing a gun barrel from an elongated solid metal stock material, the method comprising: forming on the elongated solid metal stock at least two sets of opposed index markers wherein each set of index markers comprises two index marks, one index mark on a first end of the elongated metal stock material and another index mark on a second end of the elongated metal stock material wherein each set of index markers is offset with respect to each other set of index markers at a relative angle of convergence such that convergence occurs outside of the elongated solid metal stock; boring at least two converging projectile holes through at least a portion of the solid metal stock material, each of said holes orientated with respect to one another at the relative angle of convergence being defined by at least one of the at least two sets of opposed index markers wherein each of said holes is separate from the at least two sets of opposed index markers; and profiling said solid metal stock material using the at least one of the at least two sets of opposed index markers.