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How do i set up my scope

Discussion in 'Target Shooting' started by scultra, Apr 3, 2014.

  1. scultra

    scultra Busy Member

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    Ok , ive been on the chairgun and come up with this [​IMG] but when I try to achieve this set up I cant seem to get it to drop in correctly.
    The power is consistent,the scope is centred correctly and parallax is correct .
    Where am I going wrong?
    I mount the scope and tighten up gently with cross hairs vertical and fire a few shots at 25yds and there slightly out as would be expected so what would be the next step to achieve the horizontal zero..... dial it in or shim it in to the horizontal. :)
     
  2. terry1001

    terry1001 Major Poster

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    The info you have shown is for a 25 yard zero so you need to zero your rifle at exactly 25 yards using the elevation turret (unless it's miles out in which case you would need to consider shimming etc). Once you have sighted it in to a 25 yard zero all the other aim points should be almost spot on. It does rely on you having accurate measurements of muzzle velocity and scope height and then you should be good to go, as long as you have the magnification set right. Unfortunately the markings for zoom on your scope may not be as accurate as you would hope so you may need to fine tune it to get all the holdovers correct. I would set the zero at 25 yards so that you're spot on and then try groups out at a couple of the longer ranges and see how they correspond with the theoretical aim points - if they're slightly out then changing the zoom slightly on the scope should bring them back on. You can check this in Chairgun (my version looks different to yours by the way), suppose your 50 yard hold over point is actually 1" below the theoretical point then go into chairgun and see what zoom setting gives this result and then change your scope setting to that. For example, and this is just off the top of my head with no calculations, you find that to get the 50 yard zero correct you need 16.5x zoom and not the 14.7 shown above then change the scope to 16.5x and you should then find that you still have your exat 25 yard zero and your hold overs are now correct.
    Hope this makes sense :D
     
  3. scultra

    scultra Busy Member

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    Yes Terry im at 25 zero measured to the inch :) but when I try for the 60yd on the tip of the bottom turret its 2 / 3 inches low.
    No wind interference , good groups, just low ,so are you saying when this happens simply play with the magnification until the 60 drops in !
     
  4. terry1001

    terry1001 Major Poster

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    Yes, if you can clamp the rifle up firmly you might well be able to dial it in with the zoom or failing that have a play about in Chairgun to see which way and how much it needs to be changed. It should come good without too much trouble, good luck.
     
  5. scultra

    scultra Busy Member

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    Will do Terry thanks pal :up:
     
  6. Nunga

    Nunga Well-Known Member

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    I dont use software. A tape measure, note book and pen is all you need. Just record your clicks as you get your different distances always remember to return back to zero after you finished each distance before you calculate the next. If your optics are slightly out you will be miles off on the software. and everyone's eyes are different. what some see a 20 yard on the scope others will have it at 23 yards. As long as you know how many clicks you need at any point on your side wheel then you will be sweet.
     
  7. scultra

    scultra Busy Member

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    Yes Nunga that's one way of doing it but the idea of this particular scope "Designed by a WORLD CHAMP" supposed to save the hassle of that.
    Hawk scope...Hawk software !!!!! Not exactly RONSEAL is it :rolleyes: makes you wonder how the bubble gum brigade managed to hold the record for shooting their own :p.
     
  8. scultra

    scultra Busy Member

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    Well I went out this morning in a dead flat calm and tried again and they dropped in lovely with a 16mm spread at 60yrds with ogive 16gr at 14.2mag doing 11.4lb so it seems it was a combo of the mag being slightly off and a bit of head wind that was causing the problem.
    All sorted then so thanks for the help guys :up:
     

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