What does Minute Of Angle mean?

Discussion in 'The Basics, Starting Out' started by Dave King, Sep 5, 2001.

  1. Dave King

    Dave King Well-Known Member

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    May 3, 2001
    Minute Of Angle (MOA) is bantered about frequently by lots of shooters, it's used to refer to group size and scope adjustment most frequently.

    Minute Of Angle is an angular measurement representing 1.047 inches at 100 yards, it ALSO represents 2.094 inches at 200 yards AND 3.141 inches at 300 yards, etc, etc out to infinity.

    Here's what it looks like in a chart:

    Yardage 1 MOA in inches
    100 1.047"
    200 2.094"
    300 3.141"
    400 4.188"
    500 5.235"
    600 6.282"
    700 7.329"
    800 8.376"
    900 9.423"
    1000 10.470"

    So when we adjust our scope by 1 MOA (4 'clicks' on a .25 MOA 'click' scope) we move the Point Of Impact (POI) by 1.047 inches if we're shooting at 100 yards, but if we're shooting at 200 yards this same 1 MOA adjustment moves the Point Of Impact (POI) by 2.094 inches.

    Note: For most practical purposes most folks simply think of MOA in even inches, so 1 MOA becomes 1" at 100 yards AND 2" at 200 yards, etc.... This is generally close enough for most shooting but it will get you into trouble when shooting long ranges or for high precision shooting.