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Old 05-09-2013, 18:37   #1
deerdave
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Shoots low

Had new TFO sights installed and my G20 now is shooting low. Has anybody else had this problem or have any suggestions ? Factory sights were dead on.
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Old 05-09-2013, 19:36   #2
GlocksterJeff
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Did you buy the correct rear sight height for your G20? The stock height for a G20 is 6.9mm - for the more common G17/G22 it is 6.5mm. Did you get a 9mm/.40 sight set?

Last edited by GlocksterJeff; 05-09-2013 at 19:37..
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Old 05-09-2013, 20:03   #3
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Dont know but i'll find the package and check.
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Old 05-09-2013, 20:13   #4
deerdave
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Sights are for G 20,21
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Old 05-10-2013, 09:19   #5
bustedknee
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"Shoot Low Boys--They're Ridin' Shetland Ponies"





Maybe you got the Lewis Grizzard sights?
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Old 05-10-2013, 11:29   #6
GlocksterJeff
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Hmm... If you have the correct sights, then there is little to be done. You can try a different ammo - lighter weight bullets often shoot to a higher point of aim. Not much else you can do, other than try a lower height front replacement sight.
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Old 05-14-2013, 18:25   #7
mc1911
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shooting low

I bought the 20 dollar Glock adjustable rear sight from Midwayusa.

Mine was not shooting low but different loads needed different elevation.
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Old 05-14-2013, 19:06   #8
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Quote:
Originally Posted by GlocksterJeff View Post
Hmm... If you have the correct sights, then there is little to be done. You can try a different ammo - lighter weight bullets often shoot to a higher point of aim. Not much else you can do, other than try a lower height front replacement sight.

In the same type ammunition the heavier rounds normally impact slightly higher than the lighter rounds.
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Old 05-14-2013, 19:43   #9
deerdave
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Going to load some heavier bullets next week and try that. Using 155 gold dots now. Also may check to see if TFOs for G17 will fit my slide since GlocksterJeff said there is a hieght difference, maybe a shorter front or a taller back.
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Old 05-14-2013, 20:35   #10
KA5IVR
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Quote:
Originally Posted by deerdave View Post
Had new TFO sights installed and my G20 now is shooting low. Has anybody else had this problem or have any suggestions ? Factory sights were dead on.
Yes, it happen to me. I went back to the Factory sights on my G23 and the problem was solved.

GlocksterJeff brings up and good point that I suspected was the problem. I had them installed at a gunshow, so I could not prove it.
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Old 05-15-2013, 08:16   #11
RichardB
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How low? at what range? Have you tried Kentucky elevation?
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Old 05-15-2013, 09:43   #12
deerdave
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Yep, Kentucky sighting works, but not too good for deer hunt'n. 6'' low @ 30 yds. Would have to imagine deer is @80 yds in stead of being @ 20 and aim at top of its back.
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Old 05-15-2013, 12:39   #13
MajorD
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What sometimes happens is with bright front sights you end up aligning the dots rather than the sights. You still need equal height equal light on the front blade. I saw someone shooting a night sighted gun rather high- when he put the dot in the middle of the rear notch the blade was above level with the rear. When he went back to equal height of the blade in the notch ( resulting in the dot being only partly in view ) he was back to poi/ poa. You may be having a similar problem.
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Old 05-16-2013, 07:04   #14
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Originally Posted by MajorD View Post
What sometimes happens is with bright front sights you end up aligning the dots rather than the sights. You still need equal height equal light on the front blade. I saw someone shooting a night sighted gun rather high- when he put the dot in the middle of the rear notch the blade was above level with the rear. When he went back to equal height of the blade in the notch ( resulting in the dot being only partly in view ) he was back to poi/ poa. You may be having a similar problem.
Actually, TruGlo specifically recommends lining up the dots and not the front/rear sight height. If the OP was using that conventional sight picture, and switched to lining up dots, the gun would shoot even lower as the front sight height is lower than rear with the dots lined up.
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Old 05-16-2013, 08:08   #15
ron59
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Just get a new front sight. They're not that expensive from Dawson Precision, and they have a formula for determining your new sight height.

http://www.dawsonprecision.com/Categ...t=SIGHTS+FRONT

They sell all sorts of front sights.... all black, fiber optic, tritium, etc.

As was said, POA/POI can differ based on load. So, decide what load you will predominantly shoot, shoot it at say 30 yards, determine how much too high/low you are, and follow the formula. I think they even have a guarantee that if you get the wrong one, they'll exchange with you.

I had to to that with my Warren Sevigny Competition sights. Kinda sucks, but the nature of the beast.
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Old 05-16-2013, 12:51   #16
deerdave
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Going to try to find some different bullets and weights and loadings. 10mm bullets are hard to find ,but theres a gun show this weekend so I'll be on a quest.
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Old 05-17-2013, 20:26   #17
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Going to try to find some different bullets and weights and loadings. 10mm bullets are hard to find ,but theres a gun show this weekend so I'll be on a quest.
If you really mean "bullets", they are the same as .40cal.
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