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Showing results for tags 'horizontal drift'.
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I have a 7.62x39 and added the side mount rail and an open reflex type sight. The top rail is obviously off-center to the left. I've sighted it in at 50 yds and it holds true at 100 yds too. I expect some sort of parallax to cause the point of impact to eventually move further and further to the left as distances grow but in the distances that I've shot, it doesn't. I also expect the opposite as distances are nearer, but that hasn't been obvious either even down to 50ft. My question: The rifling is right-hand twist which will cause a rightward horizontal drift. Does the off-center
