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Hunting
Long Range Hunting & Shooting
scope correction factor
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<blockquote data-quote="Canadian Bushman" data-source="post: 2086161" data-attributes="member: 41122"><p>4% sounds like a lot.</p><p></p><p>If you are determining correction factor with live fire chances are it will not be correct.</p><p></p><p>This needs to be done with the scope mounted firmly, optically centered, and aimed at properly scaled ruler or grid standing plumb and square at a very precise distance. I usually do it as close as i can and have the scope be parallax free.</p><p></p><p>Out of the handful of scopes ive tested for tracking errors, most resulted in a correction factor that was essentially lost in the size of my groups. Most were something like .997 or .998 for correction values.</p></blockquote><p></p>
[QUOTE="Canadian Bushman, post: 2086161, member: 41122"] 4% sounds like a lot. If you are determining correction factor with live fire chances are it will not be correct. This needs to be done with the scope mounted firmly, optically centered, and aimed at properly scaled ruler or grid standing plumb and square at a very precise distance. I usually do it as close as i can and have the scope be parallax free. Out of the handful of scopes ive tested for tracking errors, most resulted in a correction factor that was essentially lost in the size of my groups. Most were something like .997 or .998 for correction values. [/QUOTE]
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