Sight Question

[sky_high30]

Evening All.

Been shooting the last few sessions up at 80yrds and, 'cos i'm a bit of a weakling, i've had to pull my sight in. For some reason, in pulling my sight in I moved the group from gold(ish) to well to the right. What's the reason for this, and is there any way of fixing it? I'm reluctant to move the sight as it's fine at all the other distances, the only thing I can come up with is tune. Is there an easy fix to it, or will have to live with aiming off?

Sight is a Striker X04 with a Beiter 8mm Sight pin, shot open ring at anything below 60yrd and with a pin at anything over 60yrds.

[Woodie]

where is the sight ring in relation to the arrow? Left right or in line

[sky_high30]

Ugh. Pass, didn't notice. Will string bow and look tomorrow.

[Shirt]

Yes, there's an easy fix... leave your sight all the way in.

Lots of possibilities:
a) your tuning is crap.
b) You're torquing the bow.
c) you're canting the bow more when you try to shoot longer distances because you're not getting your vertical alignment right and so you're struggling to get through the clicker more.
d) Your sight isn't properly aligned with the arrow, because the 4th axis is incorrectly set. This is most likely, it's what a fair few people seem to find (q.v. the "reaching 90m with low poundage" thread where flipping your sight inside the bow causes them to shift left or right a lot) and is curable for the low low price of 65 bucks plus shipping - http://www.archerytech.com/

[Max]

Check the alignment of the sight mounting pad on the riser, with the direction of centreshot - you may get a nasty surprise. A year or so ago, I bought one of those clever laser alignment tools that screw to the sight mounts on the riser. The idea is that the laser head, can rotate through 180 degrees and after lining it up it on the string centreline, you knock an arrow and rotate the laser head along the arrow shaft.

When I tried it out on my Aerotec, it was out by 1/4" at the arrow tip - but the centreshot was correct by eye. A straight edge applied to the sight mounting pad on the riser clearly showed that the sight mount on the riser was out by a long way. My Matrix riser was a little better, but still out.

The result being that if you moved the sight bar in or out, the sight ring moved left or right of centreshot. This worth checking on your riser.

[sky_high30]

Shirt:

A) Probably - but I don't have to move it for any other distances?
B) Unlikely - everything feels the same
C) Very unlikely - I considered this, have been conciously noticing string blur and it looks fine enough. Though after the weekend i'll get someone to stand behind me and look (Probably that damned axis grip again)
D) Poor student, mate.

Is there a cheap version of the means you mentioned Max?

[joetapley]

Unless you have the super dooper laser system a la Max the best bow alignment tool is the long rod. Just using the string with riser bolts or marks on the limbs can be extremely inaccurate by eye as they they are so close together. (of course this assumes the riser bushing and long rod are straight )

[Furface]

I think it's simple geometry. Unless the sight pin is on the direct line from your eye through the point of the arrow (that is, you are aligning the sight pin exactly on centreshot, I think) as the sight pin moves back towards your face the angle of variance between the arrow line and the sight line will increase, resulting in your arrow line going right (for a right-handed archer). Dammit, a picture is worth a thousand words. The answer is to have a set of sight marks for use when the round contains a long distance with the sight set back at all distances, so that you can set the horizontal alignment consistently (and so adjust consistently for wind)
Did that make sense?

[sky_high30]

I was thinking that last night - it makes sense. Think the plan at the minute, short of doing what shirt suggested and leaving my sight pulled in, is to draw around the aperture for different distances, against a common benchmark.

[geoffretired]

To make arrows land to the right, right handed archers adjust the windage away from the sight window( left) It could be that as you bring the extension back towards the riser, the sight ring is moving to the left at the same time.
If you leave the sight pulled in, and try some shorter distances, you might find the arrows still land to the right( but not so far) My initial thoughts would be that the sight extension is pointing to the right of your line of vision.
A quick check; draw the bow with the sight well in and note the position of the sight ring in relation to the riser. Then push the sight as far forward as possible and repeat the draw and check for ring position. The extended position will look nearer the riser if the extension is out of line. If there is no difference, it could be hand torque or tuning. Try the alignment first; it's simpler.