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Thread: K98 rear sight scale and actual change in MOA

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    jmoore's Avatar
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    You can easily enough figure the change in POI :

    (ETA: Apologies for the "........"! Text wouldn't line up otherwise.)

    Sight height change = POI change
    .....Sight radius.......... Target distance


    So,


    POI change = (Sight height change) X (Target distance)
    ............................................Sight radius


    Just keep your units the same for each variable! Since you are working with inches, stick with that, i.e., a 0.005" change in the rear sight will go with a 3600" target distance (assuming 100 yards) and whatever the sight radius is to the back edges of the front and rear sights. Call it 20", subject to verification.


    Zo,


    POI change= (.005" X 3600")/20" = 0.900"


    Looks like slightly under 1MOA for each 0.005" change. (Noting that 1 MOA is very slightly more than 1" at 100 yards! 1.047", I think)
    Last edited by jmoore; 07-06-2017 at 02:41 AM.

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