What does "Minute of Angle" (MOA) measure?

"Minute of Angle" (MOA) measures an angular measurement. It is specifically defined as one-sixtieth of a degree. In practical terms, when applied to marksmanship and shooting, MOA is commonly used to describe the size of a group of shots on a target or the precision of adjustments on a sighting system.

For example, at 100 yards, 1 MOA equates to approximately 1.047 inches, which is often rounded to 1 inch for simplicity. This means if a shooter is consistently grouping their shots within a certain number of MOA, they can infer the accuracy of their aim and the performance of their firearm over that distance. Therefore, understanding MOA is crucial for making precise adjustments to sights and predicting shot placement on targets at varying distances.