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Thread: 25 yard zero

  1. #1
    Join Date
    Nov 2002
    Location
    St. Pete Beach & Charleston
    Posts
    5,760

    Default 25 yard zero

    I've rescoped my 7mm-08 and have access to an air conditioned indoor range but it's only 25 yards.

    I want to start there so I don't have to fight mosquitoes and sweat my ass off. The barrel also cools quicker inside. I'll also shoot my .308 a few times.

    What should impact be for these two at 25 yards to be zeroed (or close to it) at 100 yards? All I can find for short range start at 50 yards.

    Yes, I will shoot them at 100 yards before going to the woods but want to get it close in the air conditioning.

    If it matters:
    .308 ammo is Winchester 168 gr ballistic silver tips
    7mm-08 is Winchster 140 gr ballistic silver tips

  2. #2
    Join Date
    Nov 2015
    Posts
    2,485

    Default

    Both are bolt guns? I would just bore sight with bolt removed and skip the range until you can shoot 100. I wouldn't waste the ammo at 25yds.
    But if you just want to shoot, measure centerline of scope to centerline of bore and zero that distance below crosshair.

  3. #3
    Join Date
    Mar 2002
    Location
    Columbia, SC
    Posts
    2,693

    Default

    27 yards will have an approximate POI at 200 yards zero for most "deer calibers". Lock it down and you should be able to walk the crosshairs from the target to the first bullet hole in 1-3 rounds total.
    "If there are no dogs in Heaven, then when I die, I want to go where they went."
    Will Rogers

  4. #4
    Join Date
    Feb 2016
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    11

    Default




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  5. #5
    Join Date
    Aug 2004
    Location
    Camden SC
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    3,140

    Default

    My POI has always been one inch low at 25 yards, with the expectation that would give me a 200 yard zero.

    270 Winchester… 130 gr

    That seemed to put me just low at 100 yards if I remember correct.

  6. #6
    Join Date
    Aug 2008
    Location
    Sandy Run
    Posts
    2,734

    Default

    3/4 of an inch low will put you close. Center of scope to center of bore measurement and actual velocity of the bullet (not just what is printed on box) are needed for more accurate estimate.


    If a man is alone in the woods, says something, and a woman does not hear, is he still wrong?

    Bipartisan usually means that a larger-than-usual deception is being carried out. óGeorge Carlin

    Common sense is not a gift. It's a punishment because you have to deal with everyone else who doesn't have it.

  7. #7
    Join Date
    Dec 2004
    Location
    Horry County
    Posts
    3,766

    Default

    Velocity doesn’t matter at 25 yds. Sight in 3/4” -1” low at a tiny dot, to minimize error then correct at 100.

  8. #8
    Join Date
    Nov 2001
    Location
    Columbia, SC
    Posts
    46,863

    Default

    its funny all the different answers.

    well, at least it is to me.
    Ugh. Stupid people piss me off.

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