Patent ID: 8387300
Filing Date: 2013-03-05
Classification: F41G

Abstract:
1. A method of mounting a rifle scope, having a windage knob, to a rifle having a rifle bore and a receiver defining an ejection port, said method comprising: (a) providing a scope mount in disassembled form having a top rail adapted to receive a scope at a predetermined orientation and further having a rear base and a front base, each defining a top-opening threaded hole, said top rail having a front fastener aperture and a rear fastener aperture; (b) rigidly mounting said rear base to said receiver rearward of said ejection port and rigidly mounting said front base to said receiver forward of said ejection port; (c) mounting said top rail to said rear base by a rear threaded fastener fit through said rear fastener aperture into said rear base top-opening threaded hole and mounting said top rail to said front base by a front threaded fastener fit through said front fastener aperture into said front base top-opening threaded hole and wherein at least one of said fastener apertures is greater in transverse dimension than said threaded fastener fit through it, thereby permitting transverse play between said rail and at least one of said bases, after said threaded fasteners are fit through said fastener apertures and threaded into said bases' top-opening threaded holes and mounting a scope to said scope mount; (d) measuring the error of the scope azimuth angle with respect to initial bullet direction, when the windage knob is set to zero; (e) adjusting azimuth angle of top rail relative to said rifle by said azimuth angle error; and (f) finalizing said mounting of said scope mounting rail to said rifle, thereby creating a rigid, fixed attachment between said top rail and said rifle and, wherein when said windage knob is set to zero, scope azimuth direction is well aligned to direction of initial bullet travel and, accordingly, windage adjustment range of said windage knob is symmetric about direction of initial bullet travel.