A milliradian (mil) is a unit of angular measurement equal to one-thousandth of a radian. In practical terms, one mil subtends approximately 3.6 inches at a distance of 100 yards. This angular measure is commonly used in shooting sports and other fields where precise aiming and adjustments are crucial, providing a consistent and convenient way to describe small angles.
This specific measurement’s prevalence stems from its practicality in long-range shooting. It simplifies calculations for bullet drop and wind drift compensation, allowing shooters to make precise adjustments to their sights without complex mathematical conversions. Historically, military organizations have employed this system for its efficiency and effectiveness in the field. Its ongoing relevance is a testament to its enduring utility in precision marksmanship.