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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here!

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Old 06-03-2019, 11:48 AM   #1
Hpwatson
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How do you like to fix a gun shooting high?

How do you guys like to fix guns that are shooting a bit high? The track is good and straight and in line with the mech, but my buddy says its shooting high. Setup is a 105 roller, 5/8 rubber preloaded around 20%, 7.5mm rob Allen shaft with little overhang at the muzzle, enclosed track.
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Old 06-03-2019, 01:52 PM   #2
SEATUX
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Re: How do you like to fix a gun shooting high?

Easy, Aim a bit lower
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Old 06-03-2019, 02:31 PM   #3
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Re: How do you like to fix a gun shooting high?

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Originally Posted by Hpwatson View Post
How do you guys like to fix guns that are shooting a bit high? The track is good and straight and in line with the mech, but my buddy says its shooting high. Setup is a 105 roller, 5/8 rubber preloaded around 20%, 7.5mm rob Allen shaft with little overhang at the muzzle, enclosed track.
What shaft is used? Single (up or down) or double flopper?
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Old 06-03-2019, 03:17 PM   #4
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Re: How do you like to fix a gun shooting high?

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Easy, Aim a bit lower
That is about right, if there is no obvious problem causing it, and is just "dialing in" or getting your eye in on your gun.
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Old 06-03-2019, 04:51 PM   #5
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Re: How do you like to fix a gun shooting high?

There's many factors that can make a roller shoot innacurate. If you post detailed pictures, we can help you better.

If it is shooting straight, normally a longer shaft should correct the aiming problem.
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Old 06-03-2019, 04:54 PM   #6
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Re: How do you like to fix a gun shooting high?

Try sighting down the side of the gun instead of over the top, that should tell you if it is shooting straight or indeed shooting high.

If it is shooting straight, then you will have to figure out the sight picture to hit where you want it to go. Going with a little longer spear/overhang might help adjust the sight picture more to what you are used to.

If it is indeed shooting high, then I am not experienced with roller guns to give you any advise other than what gspearguns was hinting at with the flopper.

edit: Marco was posting while I was typing
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Old 06-03-2019, 06:40 PM   #7
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Re: How do you like to fix a gun shooting high?

Honestly...you dont have sights on your gun...but if you did...it would be the same, how you align the sights, if you are shooting a gun and consistently off you can adjust the sights higher or lower or just align them differently to achieve the same goal...On a spear gun, with no sights, change the way you sight down the gun till you have it tuned in....

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Old 06-03-2019, 06:52 PM   #8
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Re: How do you like to fix a gun shooting high?

I think the first thing i would try is a longer shaft. I have tried using a gun a few times with a short shaft overhang and I had significant accuracy problems. I suspect it was primarily associated with my own trouble with aiming and sighting rather than the actual characteristics of the gun itself.
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Old 06-03-2019, 06:52 PM   #9
Hpwatson
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Re: How do you like to fix a gun shooting high?

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Originally Posted by Marco View Post
There's many factors that can make a roller shoot innacurate. If you post detailed pictures, we can help you better.

If it is shooting straight, normally a longer shaft should correct the aiming problem.
Yeah it's a single flopper hanging down. It's a gun I built for a friend, it shot great in the pool for me but I think the guns he's used to shooting are pretty different so he is shooting high. I agree that a longer shaft would be a good thing to try, and he needs to shoot it more often to get used to it. Maybe some pool sessions.

What I'd like to do is have him mess around with his shaft/bands until it shoots more like the other guns he's used to. Maybe a longer shaft and switch the 16mm band to a 14mm band?
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Old 06-03-2019, 07:11 PM   #10
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Re: How do you like to fix a gun shooting high?

Maybe a longer shaft will do the trick. Being an enclosed track, I don't think band thickness will affect much.
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Old 06-03-2019, 07:14 PM   #11
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Re: How do you like to fix a gun shooting high?

Thanks for the feedback here, yeah I know bands & shaft are usually what you want to try first, I was just curious if there was some sneaky trick out there to altering how a gun shoots. I think the shaft is definitely worth trying first.
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Old 06-03-2019, 11:38 PM   #12
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Re: How do you like to fix a gun shooting high?

Use double flopper shaft.
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