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Having trouble sighting Rifle & Scope

Discussion in 'Anything Airgun Related' started by Caragana, Feb 19, 2014.

  1. Caragana

    Caragana Newbie

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    Location:
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    Hi, I have just bought a New Webley Raider 10 xs with Hawke Sport 4-16x50 ao/ir Scope with Hawke mounts. I have fitted scope to rifle and shot at target both 10M & 20M away but though the scope is at maximum adjustment I cannot get it right. When lining up the Cross Hairs to the Bullseye the closest i can get is 3inches to right and 12 inches above. Can anyone think of what i could be doing wrong? Thanks for your suggestion. :confused:
     
  2. mattyts

    mattyts Donator

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    That sounds like something is wrong or misaligned quite seriously.

    Swap the mounts round so your current front is now at the back to see if it is an alignment issue with the mounts,other than that,swapping out parts one at a time will probably highlight what's wrong,see if you can put your scope & mount setup on another gun,preferably a PCP to eliminate any factors caused by recoil,if your scope and mounts work on another gun then it's your gun that is at fault,whether it be dovetails cut incorrectly or even a mis shapen barrel.
     
  3. mark.177

    mark.177 Donator

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    take the scope off leaving the mounts on the scope rail. loosen the mounts and re fit/slide them right next to each other. re tighten and check the alignment. are they inline?
     
  4. David M

    David M Donator

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    Welcome to the forum.....:up:

    Please don't take this as sarcasm but if it's your first gun/scope combo, make double sure that you're turning the turrets in the correct direction to bring the POI closer to the bull. Centralise both turrets by counting the full number of clicks from one end stop to the other then divide that by 2 and set the turrets to that number. See where you are hitting then. Sometimes if your POI is left or right despite full adjustment of the horizontal turret, the dovetail grooves may be closer together than your mounts need and having to get them centalised, you'll need to shim one side or the other, use cut up thin strips of coke can between one side of the rear mount and the groove. This should push the rear mount to one side and correct the POI. The scope needs to be sitting perfectly central on the gun looking down on it.

    With the vertical turret centralised, if at 20m the POI as more than 4" above the bull, put one layer of that coke can metal (size of a postage stamp) between the scope and the lower front mount. If it's shooting below the bull, put the metal shim between the scope and the lower rear mount. You want to zero in the scope with both turrets near there mid points ideally.....:up:
     
  5. Dag

    Dag Pro Poster

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    Nice to see someone helping a Newbie rather than just having a go at them for not using the Search facility, well done David, and anyone who helps those new to the forum.
    Dag
     
    Last edited by a moderator: Feb 20, 2014
  6. genisis22

    genisis22 Engaging Member

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    hi, all the advice given above is good,but first of all if your raider 10? has bull barrel, where the fill port is if you look up inside you will see a cap head allen screw, this goes through shroud into bung for want of a better word this is possibly loose if so it will need retightening with the barreil shroud centred up with scope dovetail the barrel inside shroud moves left/ right and to a degree up down as it moves of centre when this is done checked follow zero advice re centre up windage elevation turrets and start fom there, also check mounts, make sure the little moving dovetail plate is the correct way up to suit your rail ie 9 or 11 mm
     
    Last edited: Feb 20, 2014
  7. alb38

    alb38 Engaging Member

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    if you have to use shims, try photo negatives if you can get hold of any, as David M stated, size of a postage stamp. Hope you get sorted. :up: Alan.
     
  8. OLD GIT61

    OLD GIT61 if no spring it wont do a thing

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    Cara have you checked you mounting screws on the gun ,they may be loose. These are the pins that hold your gun in the stock. What gun is it ,and if it is new it may not be that,but worth checking .
     
  9. terry1001

    terry1001 Major Poster

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    It sounds as though you've got to a point where you really need to start again from scratch. If you haven't already seen it then this sticky is well worth reading http://www.airgunforum.co.uk/forums...A-guide-to-scopes-Red-dots-lasers-and-zeroing
    I would suggest that you proceed like this:
    take the scope out of the mounts
    take the mounts off the rifle
    set the elevation and windage adjusters to the centre (approximately) of their travel ( method described above)
    put the lower half of both mounts in roughly the correct position on the rifle with the clamping screws on the right hand side
    lay the scope in the bottom part of the mounts and put on the top half of the rings, do not tighten them at this stage - the scope should be able to be slid bakwards/forwards and rotated. This is to stop the scope falling off.
    shoulder the rifle and adjust the scope so that the reticle appears to be vertical and that you can see a clear circular picture through the scope. Your eye should be about 3" behind the rear of the scope. Clamp down the upper rings, firmly but not overtightened keeping the gap between the 2 halves of the ring roughly the same on either side
    point the scope at a cloudy sky or a plain wall and adjust the rear diopter ring on the scope so that the reticle appears to be crips and sharply focussed.
    for a pcp make sure that the cylinder air presure is about 150 bar, this is likely to be the mid point of usable pressure and should give max velocity (generally speaking)
    start with a target at about 10 yards, this is close enough that you should be able to hit an A4 sheet of paper even if the scope is some way out. Make an aiming mark near the centre and then focus the scope so that you can clearly see it using the side focus or the front adjustable objective, use a fairly low magnification 3-4x is plenty.
    fire 5 shots aiming carefully at the same mark each time - do not compensate for any pellets that hit away from the aim point, what you are trying to do is establish where the point of impact (poi) is relative to the point of aim (poa). You can disregard ant bad shots caused by shooter error.
    you should have a small group of 5 holes in a fairly tight cluster probably offset some little distance form your aiming point.
    it is best to adjust windage (side to side) first. If (for the sake of an example) the group is off to the right then you need to move it left - the adjuster will have a mark showing either L> or R> which indicates the direction to turn it to go left or right. In this case we need to go left so turn the adjuster 1/2 revolution in the left direction.
    Now shoot another 5 shot group on a clean target - keep the first one for reference. You should now be able to see clearly the effect of your adjustment and can work out how much to turn the adjuster, and in which direction, to be able to shoot a group which is vertically aligned with the poa.
    Repeat this until it's spot on
    The elevation (up and down) is normally marhed U> showing the direction to turn the adjuster to raise the point of impact.
    At 10 yards you ought to be looking at hitting about 1/2" below the poa so turn the adjuster in the appropriate direction to achieve this. The effect of 1/2 turn on the elevation will move the poi the same distance (but vertically) as the windage did.
    When you are getting a group which is 1/2" below the aim point at 10 yards then you can increase the range to 20 yards and repeat the above process but you should now be fairly close to the point of aim.
    Set your target at your chosen zero distance which is up to you and your type of shooting and adjust the scope so that you hit the point of aim.
    Practice.
    If this doesn't work for you then come back with your results but shimming mounts etc should not be required for normal shooting with rifle/scope/mounts which are in good order and properly fitted.
     
  10. jay5488

    jay5488 Donator

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    Again, please don't take this wrong but I was at the club on Saturday with a lad who is wanting to become a member, as he knew nothing about shooting his mate assembled his scope onto the rifle, he had a very similar problem to you and it turns out his scope was 90deg out.... Ie the windage was on top and the elevation was to the left, easy mistake to make but worth a look!!!!!

    Jamie
     
  11. scottyrobs

    scottyrobs Active Member

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    Location:
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    I had same problem with a scope i bought ajustable mounts and havent had an issue since
     

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