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WTB: NF 5.5-22X56 NPR1 Scope

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  #8  
Unread 01-05-2009, 09:22 PM
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Join Date: Sep 2008
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Re: WTB: NF 5.5-22X56 NPR1 Scope

Can not find it now either. Maybe I screwed it up with the one posted above...
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  •   #9  
    Unread 01-10-2009, 12:09 AM
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    Join Date: Aug 2005
    Location: Murray, Ky.
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    Re: WTB: NF 5.5-22X56 NPR1 Scope

    I have a 5.5-22x56 with a np-r1 ret. and would take 1450 shipped it is three months old and is on my 6.5-284 right now can email pics
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      #10  
    Unread 01-10-2009, 02:14 AM
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    Re: WTB: NF 5.5-22X56 NPR1 Scope

    Finally figured out how to post pics here are a few


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      #11  
    Unread 01-10-2009, 02:17 AM
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    Location: Arvada, Colorado
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    Re: WTB: NF 5.5-22X56 NPR1 Scope

    PM Sent
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      #12  
    Unread 01-11-2009, 04:47 PM
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    Re: WTB: NF 5.5-22X56 NPR1 Scope

    Quote:
    Originally Posted by SHRTSHTR View Post
    Hmmm Why?
    There is not a big advantage going to the 56mm.

    The average size of a human’s eye pupil at night is 7 mm and in daylight it is about 4mm on average. If the optic give you a 7mm of exit pupil and you are using it for day use more than half the light will not reach the retina. I have also noticed if you are getting too much light and you look away you see light spots were ever you look and the targets look washedout. On a lot of my scopes I use a light reducer so I do not get the light spots and the washout is not there.

    Size of bell divided by magnification = exitpupil. Hare are some examples.
    56/22x=2.54mm
    56/5.5x=10.18mm
    50/22x=2.27mm
    50/5.5x=9.09mm
    The sweet spots for the 56 and the 50mm at Night and Day use.
    50/7.14x = 7mm night use and for day use 50/12.5x = 4mm
    56/8x = 7mm night use and for day use 56/14x = 4mm
    You are really not getting much advantage over the 50mm. I feel there is a bigger disadvantage and that is you have to go with tall rings 1.00” at the low to 1.25” were the 50mm you can do 0.885”.

    Mike @ CSGW
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      #13  
    Unread 01-11-2009, 06:08 PM
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    Join Date: Aug 2008
    Location: Arvada, Colorado
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    Re: WTB: NF 5.5-22X56 NPR1 Scope

    Thanks for the info CS. Very informative read.

    I just bought a NF from Nddodd. I am looking for another NF and will look into the 50mm.
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