crosshair thickness of various scopes

Discussion in 'Long Range Scopes and Other Optics' started by 7sevendogs, Feb 21, 2007.

  1. 7sevendogs

    7sevendogs New Member

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    Gents
    simple question on the average what is the thickness of a rifle scopes crosshairs say a Leopold duplex 3x9 and does it muntiply as range increases
     
  2. älg

    älg Well-Known Member

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    Hi sevend.

    I dont have the specific info you are asking for, but bear in mind that you want to know reticle thickness as well as reticle subtension. i.e. how much the center of the crosshair covers at a xx distance.

    A thick reticle may subtend 1 cm or 1/10 mil cm or more at 100m; a thin one, 0,3 cm or 0,3/10 mil at 100m.

    If it were a first focal <plane reticle, subtension angle is always the same, i.e., 1 at 100, 2 at 200, 5 at 500 and so on,because the reticle varies its thikness as you increase/decrease the power factor in the scope.

    If talking about a second focal plane reticles ( as most of the leupolds) the reticle may cover 1/4 moa at 100yds for instance; but at different distance the angle subtension will be different because the reticle thickness remains the same.
     

  3. 7sevendogs

    7sevendogs New Member

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    Alg
    First thank you for responding
    For quite some time this situation has been bugging me
    You see years ago I talked to a Leupold guru and he
    stated that the average crosshair thickness was 8/10th
    of an inch in thickness . so with that i started thinking
    and i have come to the conclusion that crosshairs do not
    grow as distance increases rather the object (target)
    decreases in size.I'm thinking 8/10 of inch at 100 yards
    grows to 8" at 1000 yards.This could be added to our error.
    What do you think 7sevendogs
     
  4. älg

    älg Well-Known Member

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    A 8/10 in. reticle would be VERY thick.-

    [ QUOTE ]
    crosshairs do not
    grow as distance increases rather the object (target)
    decreases in size

    [/ QUOTE ]

    It is the power factor what increases/ decreases the size as seen through the scope.



    What you say would be in a second focal plane reticle; reticle thickness remains the same and the target apparent size increases or decreases;

    in a FFP, the reticle thickness/target size ratio remains the same throughout the scope´s magnification.

    [ QUOTE ]
    'm thinking 8/10 of inch at 100 yards
    grows to 8" at 1000 yards

    [/ QUOTE ] - in a FFP yes if you refer to the area the reticle covers on the target at those distances.
     
  5. 7sevendogs

    7sevendogs New Member

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    Thank You
    7sevendogs
     
  6. älg

    älg Well-Known Member

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    Welcome.

    If you do a search you´ll find more information on FFP/ 2 FP scopes.-
     
  7. Savageman69

    Savageman69 Well-Known Member

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    8 tenths ? thats like 4/8 of an inch doesnt anyone remember 3rd grade fractions :cool:
     
  8. justgoto

    justgoto Well-Known Member

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    Using my Bushnell Elite 3200 10 power mil dot, at 300 yards a 1 inch dot is covered by the cross hair.
     
  9. Jon Jackoviak

    Jon Jackoviak Well-Known Member

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    8/10 of an inches would be slightly larger than 3/4" or 4/5.