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  1. #1
    Member MikieG's Avatar
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    zeroing phenomena

    I have noticed that when zeroing A1 and A2 sights, my rear aperature ends up way over to the left.
    So if i shoot your normaly center zeroed rifle, i will hit to the right. Here is another oddity. My son shoots right up the middle. When he shoots my rifle he hits exactly the same distance off that i adjusted to zero.
    This was not always the case for me. I am wondering if my glasses are creating a paralax or shifted image perception to me?
    What are your thoughts?


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    Advisory Panel browningautorifle's Avatar
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    Yup, something like that. Hard to say exactly what unless I was there coaching...
    Regards, Jim

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    Really Senior Member imarangemaster's Avatar
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    I am sure it is an "eye" thing. When I was a Range Master and Firearms Instructor, I noticed different shooter shoot the same weapon with different POI. eVEN SAW IT ON PISTOLS. NEVER had a satisfactory answer as to what causes it.

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    Mikie,
    Has anyone ever suggested patches if you do use glasses when shooting?

    You will of course know which of your eyes is weaker, use the stronger one to sight with so in essence it should dispense with any "parallex" issues you have with a patch over your weak one.
    I can't give you precise advice becuase I am not there, but suffice it to say,
    It is common, but it could be a culmination of severel factors including the scope making you think something is wrong with your image.

    Good luck just try it and see. I am sure your POI will definitely pickup accordingly.

    One of the guys on the range yesterday had a similar problem with a Chinese bought scope. Basically, you had to have cross eyes, blurree vsion, having cinsumed at least 10 pints of ale, and then you might hit a barn door.
    Don't do it, invest in the best when it comes to scopes or at least what you can afford in the upper market place is my advice to all.
    'Tonight my men and I have been through hell and back again, but the look on your faces when we let you out of the hall - we'd do it all again tomorrow.' Major Chris Keeble's words to Goose Green villagers on 29th May 1982 - 2 PARA

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    One consideration is just how high the line of sight is above the bore with the M16icon. Canting the rifle can cause a very noticeable shift in deflection. That factor is one reason I prefer the original, flat-bottomed, triangular hand guards. Just like a purpose built offhand rifle, the flat bottoms give me a good tactile sense of the cant. The round hand guards biggest advantage is supply clerks no longer have to know left from right. Perhaps a spirit level by the front sight, like some old time long range rifles, might solve the deflection problem.

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    Do you look like this guy? If so, I may have an idea of what the problem may be.....



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    Jack Elam...long time since I saw one of his movies... Wal-eye vision.
    Regards, Jim

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    Really Senior Member Sunray's Avatar
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    There's really nothing phenomenal about it. Every shooter shoots every firearm differently. That'd be everything from how they hold the thing to their eye sight. It's why you cannot sight in for somebody else.
    Needing the sight all the way left might be your specs. They for distance or close? Don't think I'd worry about it either way though.
    Spelling and Grammar count!

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    Member MikieG's Avatar
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    Thread Starter
    You guys are awesome. Keep in mind this is an M16A2 rifle we are discussing here.
    Upon reviewing your responses, one really stands out. Rifle cant. I am a left handed shooter, my son is right handed. This cant issue is highly likely to my extreem zero rear sight setting. Where could a guy get a level for the A1 and A2 rifles? And is this a Perry approved addition?

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    Really Senior Member imarangemaster's Avatar
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    Cant of the weapon is probably the culprit. He is right handed and cants to the left, and you being left handed cant the opposite direction. At 25 yards, it could be 3-4 inches difference.

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