>>Grouping in mm / distance in m = angle in mrad > >Very interesting! I had never thought of small angles in terms of radians before, >let alone doing the "group size / distance equals angle."
Excellent! I discussed the use of the military unit of angle 'mil' (a corruption of milliradian) for targeting. But I did not make that extra small step for this application. It is basically a smaller scale version of what combat officers do when directing fire: Angle in mrad (e.g. as seen through binoculars) = horizontal miss distance/range >I'm going to write a note to American Rifleman with this info, >as they occasionally print stuff that includes "moa" (minute of angle). It may be an additional selling point if the readers are told that milliradians (almost) are used by their armed forces. >For general reference, and somewhat in reply to a private post by Terry Simpson Ah, thanks for pointing that out. I had intended the reply to be public. >expert����������25 mm groups������������25 / 100 =� 0.25 mrad = 250 urad Interesting. Thanks.
