Thread: Obtaining more information from your groups - overlaying groups

Originally Posted by earplay

Out of interest how did you arrive at 1.5moa?

Mean radius is 2.14cm at 200m, so 1.07 at 100m. Multiply by 4.16 to get your predicted Ø95 (diameter into which 95% of shots can be predicted to fall). 44.5mm at 100m. Multiply by .91 to convert to yards. 40.5mm. 1.59 inches. Divide by 1.047 to convert to MOA. 1.52. Round it, because it's insane to think about going beyond 1 decimal place talking about this stuff.