Digilogic

So since I have been shooting pistols I have had a recurring problem. I can't shoot with both eyes open. I constantly either shut my left eye or turn my head to the left far enough that my left eye can't see the target. I am left-eue dominant but I have tried changing to left handed shooting and can't. Also when I was trying the left handed shooting I didn't find it any easier to acquire the sight picture. I focus on the front sight but I get either multiple sight post pictures or multiple targets.

I would greatly appreciate some help.

Thanks

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