| tune your vertical sight bar there's been a lot of talk on here about bow tuning etc but i haven't seen one yet about tuning your sight so here goes.
This is something that i hadn't even thought of until an experienced club member passed on the know how. Even though i had a good walk back test, at every distance change i would have to adjust my windage, sometimes by quite a lot which cost me loads of points during the round. On good advice i carried out the following procedure and the result is now no windage change at all from 90m down to 30m (on a calm day).
have your bow completely made up with all attachments, lean the bow against a chair (or get friend to hold it for you) the same as you would as if you were checking your centre shot. Have the sight extender bar fully out and move the sight block to the very top of the vertical scale.
Stand behind the bow and line the string up down the centre of the limbs and riser, take a mental picture of where the string crosses the sight pin rod. Now move the sight block to the very bottom of the scale and repeat above procedure.
The string should cross the sight pin rod at exactly the same place for top and bottom of the scale, if it doesn't then your sight needs adjusting. Most sights have got one elongated hole for this adjustment. Simply slacken the bolts that hold the vertical scale in place and move in toward the riser or away from the riser depending on your string alignment.
Repeat process until the string lines up at exactly the same place for top and bottom of the sight scale. Once done you may have to adjust your windage to compensate for adjustments you just made.
you should now have to make minimal if any windage changes across the different distances. |