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Perfect Every Time Scope Mounting
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<blockquote data-quote="bruce_ventura" data-source="post: 626945" data-attributes="member: 34084"><p>Nice explanation Scott. </p><p></p><p>Finding the optical center is useful when diagnosing the alignment of your barrel/receiver/base. As long as the base is aligned to the rifle bore within +/- 8 moa of the desired alignment (0 bias, -20 moa bias, etc.), you can forget about optical zero. If the base is off more than 8 moa, you should diagnose and correct the alignment problem before proceeding with scope installation. </p><p></p><p>You will get the best optical performance from your scope if you mount it so that the elevation/windage adjustments are off optical center by no more than 25 moa at the longest range. Off-axis optical aberrations are minimized this way. For long range shooters that means using a base with negative bias. </p><p></p><p>As Scott said, Burris Signature rings will cure a lot of alignment problems. Highly recommended.</p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 626945, member: 34084"] Nice explanation Scott. Finding the optical center is useful when diagnosing the alignment of your barrel/receiver/base. As long as the base is aligned to the rifle bore within +/- 8 moa of the desired alignment (0 bias, -20 moa bias, etc.), you can forget about optical zero. If the base is off more than 8 moa, you should diagnose and correct the alignment problem before proceeding with scope installation. You will get the best optical performance from your scope if you mount it so that the elevation/windage adjustments are off optical center by no more than 25 moa at the longest range. Off-axis optical aberrations are minimized this way. For long range shooters that means using a base with negative bias. As Scott said, Burris Signature rings will cure a lot of alignment problems. Highly recommended. [/QUOTE]
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