Expert Rifleman is a shooting simulator which simulates realistic shooting against stationary and moving targets. The simulation accounts for and allows the user to compensate for the forces which affect the path of the bullet. The only thing which Expert Rifleman cannot do is teach you how to pull the trigger. The goal of Expert Rifleman is to let you gain proficiency at shooting without expending valuable ammo or barrel life. The simulation will let you practice shooting in windy condition. Try out zeros at different ranges, and set the conditions under which your rifle is zeroed. Compare calibers based on ballistic performance flight time, drop and drift. The scope reticles in Expert Rifleman are calibrated in Mil-rads or MOA and function identically to the real thing.