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Thread: How much extra height?

  1. #1
    Boolit Bub
    Join Date
    Nov 2016

    How much extra height?

    Got a new Krag sporter with a front sight very similar - in appearance - to the Springfield band. I put a Lyman #48 on the back end, and after adjusting it, the slide is bottomed out; won't go any lower. Shooting it today, the rifle shoots 13.5 inches higher that point of aim at fifty yards, and 21 inches high at a hundred. I need to get a higher front sight blade - by how much?

  2. #2
    Boolit Buddy
    Join Date
    Dec 2013
    Libby, Mt.

    Read this, get out your calculator and you will know!

  3. #3
    Boolit Grand Master

    Join Date
    Mar 2013
    Northwest Ohio
    Error X sight radius
    distance in inches = the correction for the fire arm

    21" X 28" (est of sight radius) = 588 / 3600 = .164 added to front sight to zero at 100 yds. I would go up to .170-.175 so sight isn't bottomed out.

  4. #4
    Boolit Bub
    Join Date
    Nov 2016
    I was guessing a bit over an eighth. Thanks all!

  5. #5
    Boolit Master
    leebuilder's Avatar
    Join Date
    Dec 2014
    Nova Scotia
    Click image for larger version. 

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    This will help.
    When you read the fine print you get an education
    when you ignore the fine print you get experience

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BR Bench Rest M Magnum RN Round Nose
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