One milliradian (mrad) subtends an arc of approximately 1.8 inches at a distance of 500 yards. This angular measurement is frequently used in long-range shooting for adjusting rifle scopes and calculating holdovers for wind or trajectory compensation. Understanding this relationship between angular measurement and linear distance at specific ranges allows for precise shot placement.
Accurate shooting at extended distances requires a precise understanding of how small angular adjustments translate into changes at the target. The ability to calculate the linear equivalent of a milliradian at various ranges offers significant advantages in practical shooting applications, particularly in disciplines like long-range rifle competition and hunting. This principle has its roots in military applications and has been adopted by civilian shooters for enhancing accuracy.