Parallax Manipulation???????

Forums Optics, Scopes, Rings, & Mounts Parallax Manipulation???????

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    A2ZBen
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    Is it possible to take a scope that min.parallax is 25 and put add-on lens on to make it got to 10 yards.???

    What in a scopes construction determines this ???

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    DutchMike
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    Some people will tell you it is possible by turning the objective lens in or out ( forgot which way , google is your friend), but I would advise to call an expert on optical devices for good advice on this. Especially with argon-filled / other gas-filled scopes I would be very carefull. However, I would never buy a second hand scope that was manipulated like this.

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    ranedouglas
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    —   on cheaper scopes —  i understand that the ring that screws over the objective lense can be unscrewed .  then the lense can be removed , and the anchor ring inside the lense can be manipulated… just keep in mind that you will loose any adaptive airs inside the tube while fiddling around , looking for that perfect objective parallax setting (nitrogen/antifog).  leapers has 3-9×40 mildot with parallax set at 35 yards.  the 3-9×32 centerpoint at walmart is set at 50 yards.  and academy sports has the bsa sweet 22 (3-9x40ao) scopes for around $50.

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    Nutcracker
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    I have been unscrewing/backing  off   objective lens for years to use on short range weapons.   Mostly on my pistol scopes.   People  say it will cause the nitrogen to leak out & will  fog, so far I never had one fog.  I do not back it out all the way just enough to get the parallax free image I want.  I would not do it to a thousand dollar scope.  It won't work on all scopes, some of them I tried I could not get obj lens to move.  I don't force it much.  Some scope companies will do it for you & that would be best. 

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