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Thread: Using your BUIS and Aimpoint's T2 optic

  1. #11
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    Join Date
    May 2014
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    South Central Us
    Quote Originally Posted by GJM View Post
    Me, too. I have noted the POI windage shift between large and small aperture, which was a surprise, but never a T1/2 effect on BUIS zero.
    Some irons do not have an offset machined into their apertures I have found.

  2. #12
    Member Luke's Avatar
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    Jan 2014
    Location
    Alabama
    Quote Originally Posted by Unobtanium View Post
    Some irons do not have an offset machined into their apertures I have found.
    What does this mean?

  3. #13
    Unobtainable, out of curiosity, did you notice this shift with the large aperture, small aperture or both, and what model/brand BUIS?

    Wannabe, in the Troy BUIS at least, we notice windage shifts going from large to small aperture. This minute, I am forgetting which way the shift was. We noticed it when my wife was zeroing Troy BUIS on a AAC .300, and she shoots good enough groups to clearly see it at 50 yards. (I just use the small aperture.)
    Likes pretty much everything in every caliber.

  4. #14
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    Join Date
    May 2014
    Location
    South Central Us
    Rosh works sl1 up front and magpul MBUS rear. Small aperture only.

  5. #15
    Member
    Join Date
    May 2014
    Location
    South Central Us
    Quote Originally Posted by Wannabe View Post
    What does this mean?
    Many BUIS dual aperture flip on a screw. Screw has threads. The rest is simple math.

  6. #16
    I have not tried this with my T2's yet, but with T1's and Comps, I have never seen this kind of shift. I usually zero my irons without my RDS on, and then shoot them through the RDS during training.

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