Rifle Scopes ZCO Turret Cap Set Screws - Sweet Spot?

chrome

chrome

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Minuteman
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    • Aug 21, 2005
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    4,708
    VA
    #1
    Own 4xZCOs, big fan, but I've always noticed their turret cap set screws were very sensitive to finding the sweet spot when zeroing.

    Unfortunately, I am running into an issue with a 4-20x ZCO (non-NLE) today with the windage turret where no matter what micro adjustment I give the set screws, the cap completely slips like I am trying to re-zero it, or it actually locks the turret in the "locked/down" position and I cannot move it.

    Emphasis on I am making super micro adjustments, 5-7degree turns at most, and I cannot get the turret to function normally.

    I have an email out to ZCO but was scheduled to shoot this rig tomorrow so thought I'd ping the hive mind to see what blind spot, if any, I have on this.

    What am I missing and/or doing wrong?
     
    #2
    chrome said:
    Own 4xZCOs, big fan, but I've always noticed their turret cap set screws were very sensitive to finding the sweet spot when zeroing.

    Unfortunately, I am running into an issue with a 4-20x ZCO (non-NLE) today with the windage turret where no matter what micro adjustment I give the set screws, the cap completely slips like I am trying to re-zero it, or it actually locks the turret in the "locked/down" position and I cannot move it.

    Emphasis on I am making super micro adjustments, 5-7degree turns at most, and I cannot get the turret to function normally.

    I have an email out to ZCO but was scheduled to shoot this rig tomorrow so thought I'd ping the hive mind to see what blind spot, if any, I have on this.

    What am I missing and/or doing wrong?
    Click to expand...

    Try calling them before they are closed (208) 435-4000

    Edit, I forgot they closed early Friday
     
    #7
    Bravo6niner said:
    You don’t find a better dealer than these guys!!!
    Click to expand...


    icegif-899.gif
     
    • Haha
    Reactions: Bravo6niner
    #11
    I had the same issue with my 420. I spoke with the service center in Idaho and was told to back out the turret screws 4-5 times and pull up really hard. Then push down to lock the turret, then tighten the screws. That worked for me and no more issues. You have to make sure going forward to unlock the turret before loosening the screws, set your zero, then push down and tighten the screws.
     
    • Like
    Reactions: LR1845
    #12
    jdsuper said:
    I had the same issue with my 420. I spoke with the service center in Idaho and was told to back out the turret screws 4-5 times and pull up really hard. Then push down to lock the turret, then tighten the screws. That worked for me and no more issues. You have to make sure going forward to unlock the turret before loosening the screws, set your zero, then push down and tighten the screws.
    Click to expand...

    how "hard" did you pull up? and are the set screws captured inside the caps or do they risk coming out?
     
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