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Scope mag

Discussion in 'Anything Airgun Related' started by jmsjabb, Sep 2, 2014.

  1. jmsjabb

    jmsjabb Active Member

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    I was brought up on a scope which was about 1/2 tube and about 2x mag, fixed to a BSA Meteor. I thought it was fantastic compared to the open sights.
    I now have bought a 3-9 x 40 and again, think it is the best thing since sliced bread.
    My question is, what is the advantage of an adjustable scope, and why would you not want full magnification? Surely the larger the image, the easier it is to settle on a hit point?
    I'm sure I am missing something, but what?
    Your knowledge please guys????
     
  2. milek

    milek Honorary Member

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    The greater the magnification the more shake you will experience. That's the trade off.
     
  3. jmsjabb

    jmsjabb Active Member

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    Is that the only reason? Thanks for the reply
     
  4. milek

    milek Honorary Member

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    Should you stumble on a target that's relatively close say 10-15 yards the image will be a blur. Also you might find (depending on quality of scope) that your low light hunting is somewhat shorter than a scope set on a lower magnification.
     
  5. mattyts

    mattyts Donator

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    A 50x scope will not focus down to low ranges,as well,a 50x scope will be blurred if the focus is a few yards off where as a 3 or 4 mag scope will seem clear from 10 yards to infinity.

    The higher mag you go,while still staying at the same price point means the quality of glass will decline.
     
  6. r10hunter

    r10hunter Honorary Member

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    Also on high mag when hunting you will see a rabbit in front of you and struggle for a few seconds to find it in the scope. Due to a reduced field of view at high mag.

    Depth of field is greater at low mag. ( close things and far things are both in focus )

    Parallax error is reduced at low mag. ( your point of impact moves due to incorrect head position)
    Cheers Andy
     
    Last edited: Sep 2, 2014
  7. jmsjabb

    jmsjabb Active Member

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    That all makes sense, thanks guys
     
  8. sharpsman

    sharpsman Pro Poster

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    Also most cheap scopes that have a big variable on the magnifacation loose zero when altering the magnifacation, i would rather spend my money on a fixed mag scope especialy if its just for knocking Rabbits over ect.
     
  9. Trampilot

    Trampilot Big Poster

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    i used to be a fix mag guy and to a point I still am (one day I will own a Leupold 6x42) but variable mags are useful. You can actually use the reticule and zoom for simple rangefinding by bracketing the target and if you know the size of the target the further you need to zoom into bracket it against the 30/30 ret the further away it is.

    The other option is that on some tricky shots zooming in can help place the shot better. Or zooming out can help if you are shooting shorter ranges and you get a wider field of view.

    +/- on both. I still use both and I leave the zooms on 6x most of the time anyway!
     
  10. warrenater

    warrenater Donator

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    also if you are not using a fixed focal plane scope, and you are using the mil dots as aim points the poi alters with the magnification . and that is something you can use to your advantage ie if you do your time out in the field on paper you can alter the magnification so it brings your mil dot ( or 1/2 dot )on to the poi for a given distance .
    say you are shooting at sixty yards and your poa is just more than the mark try turning the mag down a bit to bring it into line .
     
    Last edited: Sep 4, 2014

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