The question of angular measurement relative to distance is crucial in long-range shooting and other precision activities. One milliradian (mrad) subtends an arc of one thousandth of the radius. Therefore, at a range of 100 yards (3600 inches), one mrad corresponds to 3.6 inches. This understanding allows for precise adjustments to aiming devices based on observed bullet impact.
Accurate angular measurement is essential for making corrections in ballistics. Calculating the necessary adjustments based on milliradians allows shooters to compensate for factors such as wind drift and range estimation errors. This precision contributes to improved accuracy and consistency. The use of milliradians in firearm optics has become increasingly prevalent due to its inherent mathematical relationship with distance, simplifying calculations and allowing for quick adjustments in the field.