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Scope advice wanted re parallax using a n/v pulsar challenger gs

Discussion in 'Anything Airgun Related' started by ratman60, Oct 6, 2014.

  1. ratman60

    ratman60 Pro Poster

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    hello, for those more knowledge able than me on scopes having purchsed the above n/v unit from a good forum member soon to arrive i just like to ask if this scope suitable to use HK 3022 HAWKE SPORT HD 3-9 X 40 AO reference the parallax. it will be with my .22 FX vermy for winter ratting so the range is max 30/35 mtrs. if you know the vermy the rail is ideal to put scope max forward to accomodate the n/v unit and light enough with the rifle to carry a few hours which suites me, i do have another scope a new HAWKE HK3072 4-16 X 50 AO IR but its not my thing so what do other forum members use or recommend. thanks
     
  2. ratman60

    ratman60 Pro Poster

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    anybody??
     
  3. loki_79

    loki_79 Donator

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    I don't think it will make much difference with either. They are both AO, so you can easily set the parallax to the middle of your intended ranges. The smaller objective (40mm) will give you a greater range either side of that set distance, where everything is still in acceptable focus. The larger objective (50mm) will give you better light gathering.

    Both will be better on the lowest magnification settings (i.e. 3x or 4x respectively), this will also extend the range of acceptable focus and give a wider field of view for target acquisition.

    I'm afraid I don't have any experience with nv, but based on scope use in low light, I would personally go with the 40mm at 3x with the AO set around 20 or 25 yards. If you find that the sight picture is not bright enough, then try the 50mm objective, but be aware that any parallax error will be slightly greater, since it is proportional to both objective size and magnification.
     
  4. loki_79

    loki_79 Donator

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    Also, I assume the 40mm scope is a bit shorter, which would obviously be better. What is the difference in length between the two?
     
  5. ratman60

    ratman60 Pro Poster

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    hello, i dont like the 50mm hawke and am selling with a AA S410 KIT so hoping the 40mm will work ok. which is as you say shorter and put right at rail front so the challenger is set for good eye contact.
     
  6. ratman60

    ratman60 Pro Poster

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    hello, i checked on the HAWKE web site and this model HK3022 40MM 3-9 states adjustable objective for parallex free shooting so i will use this one, many thanks
     
  7. loki_79

    loki_79 Donator

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    Yes, you can adjust the focus by rotating the objective bell. There will be markings on it in yards, but use these as a guide only. Verify it yourself by focusing on something at a known distance. You will then be parallax free at that distance, but with a low mag setting and a smaller objective you will have a good margin either side of that distance.
     
  8. terry1001

    terry1001 Major Poster

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    You will probably find that you need to play about with the focus on both the scope and nv unit to get a clear picture. As you will be viewing using ir light the range markings on the scope objective will be incorrect. I suggest you try using just the nv unit to get used to focussing it as you will have eyepiece and objective adjustments on it and it can be fiddly to get it set right, once you get the hang of it you can hook it up to the scope. On the scope you need the nv to give a clear image of the reticle and then you adjust the AO to get the target in focus. As mentioned above it will all be easier if you keep the scope magnification as low as possible, this makes focussing less fussy and allows more light through.
     
  9. ratman60

    ratman60 Pro Poster

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    hello, just to update have zero the 3x9 x 40 hawke to 25 mtrs and put on rail of FX vermy as far as could then fitted the pulsar challenger and DSA, looks good so far can see reticule and brick wall at 25mtrs clear but yet to try in dark, might not be as good as a photon but i think the ratties wont know:D
     

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