bow suddenly shooting 6 inches high...? (updated)

[vandeman17]

My dad is starting to freak out a little bit. He has been shooting a bunch and had his bow all dialed in all the way out to 50 yards. He shot two nights ago and sent me the pictures of his 20-40 yard groups and they all were tight and looking good. He went out yesterday morning to shoot and his first shot at 30 yards airmailed the target and his next two barely hit the top. He tested it and all his pins are at least 6 inches high now. He hasn't dropped the bow or done anything different. Any thoughts?

[Jonathan_S]

D-Loop slid down?  If the serving was starting to slip or the D-Loop is failing, I would guess that?

[jaymark6655]

Sometimes sights can loosen up enough and shift, just from shooting or the peep could have shifted.

[blackveltbowhunter]

    I would check my peep first. Make sure there is no movement. Very slight differences in peep location will be obvious on the range. 

[dreamunelk]

Form?

Usually is my issue when there are sudden changes.

[vandeman17]

Form?

Usually is my issue when there are sudden changes.

He said he felt good on all his shots and after the first one air mailing the target he really focused and made sure his anchor point and form were all the same.

[BULLBLASTER]

If nothing was changed with the bow then all that is left is the shooter. I have seen many times where relative beginners will unknowingly change their form and curse the bow for being off. Most times I have noticed it is due to bow fit... draw weight or draw length not fitting the shooter.
Not to say something hasn't moved... but sights and rests and peeps don't adjustment themselves in the bow case.

[Fowlweather25]

Sounds like peep travel to me.

[vandeman17]

If nothing was changed with the bow then all that is left is the shooter. I have seen many times where relative beginners will unknowingly change their form and curse the bow for being off. Most times I have noticed it is due to bow fit... draw weight or draw length not fitting the shooter.
Not to say something hasn't moved... but sights and rests and peeps don't adjustment themselves in the bow case.

I would tend to agree but his was still getting tight groups but they were all high and with all his pins. It just sounds too much like something changed with his bow and not his form. If he went sporadic or something then I could see it was form but who the heck knows... 

[wildmanoutdoors]

Spuadic placed shots on my bow means its out of time. This doesent sound like the case here though.

[BULLBLASTER]

Did he change anything else? Wearing glasses or sunglasses? Contacts? Sometimes just how your eye lines up the peep and sight housing that day can affect. Or a minor change in anchor point (release hand on face or string on nose). My best advice would be just move the sight and keep shooting. Is the peep slightly large compared with the pin guard? Mine is that way to allow more light but I have to be very careful with alignment and centering the guard or I will be off a bit.

[vandeman17]

Did he change anything else? Wearing glasses or sunglasses? Contacts? Sometimes just how your eye lines up the peep and sight housing that day can affect. Or a minor change in anchor point (release hand on face or string on nose). My best advice would be just move the sight and keep shooting. Is the peep slightly large compared with the pin guard? Mine is that way to allow more light but I have to be very careful with alignment and centering the guard or I will be off a bit.

I asked him the same thing. He is very particular about everything he does so after getting his bow set up and given a few lessons on how to shoot, he makes sure that with every shot he does everything exactly the same. I told him to talk to the bow shop and see if they can see anything that might have changed with the bow, peep, sight, etc before he changed anything. I am hoping the peep slid just a bit and that it will be a quick fix because he was shooting really good up until this and had a lot of confidence going.

[jaymark6655]

If nothing was changed with the bow then all that is left is the shooter. I have seen many times where relative beginners will unknowingly change their form and curse the bow for being off. Most times I have noticed it is due to bow fit... draw weight or draw length not fitting the shooter.
Not to say something hasn't moved... but sights and rests and peeps don't adjustment themselves in the bow case.

If screws holding the sight where lose, just him picking it up or his last shot could have cause the whole sight to shift slightly down.  Then his point of aim and impact would be higher and with each shot the sight would slip a little lower causing each shot to be even higher.  When I shot a lot, first three shots on a group where dead on.  Next shot hit the target barely at the top.  I thought maybe I messed up my form or something, so I shot one more and my sight feel off the bow.  Bows have a lot of vibration and stuff can come loose from just shooting it.

[BULLBLASTER]

Very true jaymark... I was assuming ( I know what happens when you assume)  that the shooter in this case had checked the sight and rest screws.  And he said they were all grouping well just 6 inches high.

[vandeman17]

He did say that he checked everything and couldn't see anything that was loose or wrong...