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Thread: How much extra height?

  1. #1
    Boolit Bub
    Join Date
    Nov 2016
    Posts
    44

    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
    Location
    Libby, Mt.
    Posts
    202
    https://www.brownells.com/aspx/learn...aspx?lid=11253

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

  3. #3
    Boolit Grand Master

    Join Date
    Mar 2013
    Location
    Northwest Ohio
    Posts
    9,136
    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
    Posts
    44
    I was guessing a bit over an eighth. Thanks all!

  5. #5
    Boolit Master
    leebuilder's Avatar
    Join Date
    Dec 2014
    Location
    Nova Scotia
    Posts
    965
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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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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check