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Tim Hancock Tim Hancock is online now
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Join Date: May 2004
Posts: 10,836
Odd vision problem related to pistol shooting

Any eye docs here?

I have shot rifles all my life and pistols occasionally for the last 10 years or so.

I am a bit nearsighted with a bit of astigmatism in my dominant right eye but typically do not need to use my prescription glasses in day to day activities. I have always shot guns right handed with both eyes open and typically see one fuzzy target and two sets of sights...never been a problem rapidly acquiring a decent sight picture.

I recently have been trying to hone my admitedly mediocre pistol skills to start competing in shooting contests. That said, I carefully sighted in my new pistol using a vice to zero the gun perfectly at 25 yards. I did this using only my left eye as it has the best vision. Well after wasting 500+ rnds, I have been have been continually hitting several inches left of center when slow firing. Because I am sure the sights are dead nuts due to my rigid "vice firing" sight in procedure, I assumed I was doing something wrong (yanking, improper finger location, milking, flinching etc).

In pure frustration, I decided to re-check my vice supported sight zero. It checked out perfect, but I bumped my set-up once and quickly looked back down my sights using my "normal" right eye dominant both eye open view and my sights looked off by quite a bit. I looked again with my left eye only and they were perfect again.

Turns out that when lining up my target with both eyes open, I am actually pointing the gun several inches left when cross checked with my good left eye only or with my glasses on with my right eye only. My brain is somehow shifting the image I see when shooting both eyes open with my poor right eye.

I do not have a cross dominance or target double vision issues as I can clearly get on target with both yes open just like I have all my life, yet something weird is happening now. Any one else ever hear of such an issue? I guess I need to see an eye doctor as I would hate to have to start shooting with one eye closed especially for the kind of fast action shooting competitions I want to compete in.

Left view below is what I see when looking at 8" target 15 yards away using normal both eye open shooting.

Right view is where the gun is actually hitting and is what I see if I close one eye without moving gun.
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Old 10-01-2009, 07:39 AM
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