Scope click values over distance

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by daveosok, Dec 3, 2002.

  1. daveosok

    daveosok Guest

    Is this right?
    1/4 MOA click value (true mathematical value)

    100 yards = 0.2618
    200 yards = 0.5236
    300 yards = 0.7854
    400 yards = 1.0472
    500 yards = 1.3090
    600 yards = 1.5708
    700 yards = 1.8326
    800 yards = 2.0944
    900 yards = 2.3562
    1000 yards = 2.6180

    Now my question is my rifle with the load I am using drops 32 inches at 500 yards, at 500 yards each click equals 1.3090, 32/1.3090=24.4 clicks rounded up to 25 clicks. Is this correct?
    32 inches is actually 30.557 MOA, do I have to convert the drop in inches to true MOA and then devide?
    30.557/1.309=23.343 or 23 clicks.
    Difference of 1.057
    Not much of a difference but its only 500 yards when extropolated out to 1000 the difference will be exponetial.
    Thanks for the clear up in advance.
     
  2. bgordon

    bgordon Well-Known Member

    Messages:
    73
    Joined:
    Mar 15, 2002
    Given real world variations in all the things you have mentioned, you need to do actual field testing to show how much your rifle will vary from the calculated. Sounds like you got as close as possible with just a calculator.
     

  3. Brent

    Brent Well-Known Member

    Messages:
    2,537
    Joined:
    Jun 12, 2001
    Minute of Angle

    32 inches is actually 30.557 MOA, do I have to convert the drop in inches to true MOA and then devide?


    32/5= 6.4/1.047= 6.113*4= 24.452 clicks

    Total drop in inches divided by distance in yards multiplied by MOA in inches at 100 yards times number of clicks per MOA.

    32/1.308= the same thing, just faster.

    30.557/1.309=23.343 or 23 clicks.

    This is not correct.

    Your crosshairs should move 32 inches down on the target at 500 yards if your scope clicks are actually calibrated to 1/4th MOA or .2618" thus 23.343 clicks would only compensate for 30.557 inches of drop. Hope that helps.
     
  4. sierra22

    sierra22 Well-Known Member

    Messages:
    126
    Joined:
    Dec 12, 2002
    Seeing your calculations certainly makes me appreciate the simple metric system, where:

    1 mil = 10 cm/ 100m
    1 click on european scope = 0.1 mil

    Whereas the calculation for a 300m shot with a bullet drop of 42 cm would be:
    42cm : 3cm click-value = 14 clicks.