Trajectory compensating reticle for accurate engagement of a target at an unknown distance

A reticle for use in a firearm scope that compensates for the trajectory of a bullet, allowing the shooter to accurately engage the target despite the target's distance from the shooter. The reticle uses a number of trajectory arcs and distance markings that correspond to the target's size and distance to provide the shooter with an accurate aiming of the target. Once the outer edges of the target aligns with the trajectory arcs the target is ready to be engaged. Distance markings, windage markings, and reticle illumination provide for further accuracy of the shot. A milling tree integral to the reticle provides for a quick determination of the target's distance, particularly in instances when the target is not intended to be engaged.