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Thread: Loss of Zero?

  1. #1

    Loss of Zero?

    I've had to move my scope an inch forward due to eye relief. The mounts were untouched, just slide the scope forward. I didn't have a chance to shoot the rifle again afterwards but wondering whether I would lose my zero as a result?

  2. #2
    quite possibly depending on scope and mount tolerances

    scope tubes are not a true measurement of 1" or 30mm at the tube

    they tend to vary by fractions of an inch or mm

    only way you will know is check it


    I certainly wouldn't remove and refit a scope and shoot anything but paper to find out the hard way

  3. #3
    I would defo check zero.

  4. #4
    The zero might not move by much, but the chances are you may also have rotated it without realising. Best check zero to be on the safe side

  5. #5
    agreed, the only way is to check. Zeiss scope (30mm) on talley mounts so should be rigid but you just can't tell.

  6. #6
    Out of interest though, should the principle of moving a zero'd scope back or forth in fixed mounts impact the point of impact, all other things being equal?

  7. #7
    Quote Originally Posted by blaire View Post
    Out of interest though, should the principle of moving a zero'd scope back or forth in fixed mounts impact the point of impact, all other things being equal?
    Yes. Your head is in a different position, so your eye is in a different position. I find it hard to envisage how you manage to move the scope by an inch, unless you have removed or changed the butt pad. I recommend you get some further training on how to hold your rifle consistently in field shooting positions before you pursue any live quarry.

    Regards

    JCS

  8. #8
    Will do. the recoil, albeit light on the 243, caused the eyepiece to hit my forehead , when on the range.

    Quote Originally Posted by jcampbellsmith View Post
    Yes. Your head is in a different position, so your eye is in a different position. I find it hard to envisage how you manage to move the scope by an inch, unless you have removed or changed the butt pad. I recommend you get some further training on how to hold your rifle consistently in field shooting positions before you pursue any live quarry.

    Regards

    JCS

  9. #9
    Also the erector tube in the scope may not be centred which could change the alignment with the barrel slightly

  10. #10
    Quote Originally Posted by blaire View Post
    Will do. the recoil, albeit light on the 243, caused the eyepiece to hit my forehead , when on the range.
    Ouch. I've had some very good one-to-one training from IanF on here - Training - Farrington Deer Services Regards JCS

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