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Hunting
The Basics, Starting Out
How to sight in a rifle - The proper use of variable power scopes
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<blockquote data-quote="eshell" data-source="post: 158257" data-attributes="member: 5747"><p>+1 SuperMag.</p><p></p><p>[ QUOTE ]</p><p>1) What power should be used in sighting-in the rifle at a 200yd zero?</p><p></p><p>[/ QUOTE ]</p><p>With a good quality scope, point of impact will be the same, so it doesn't matter from taht aspect and higher magnification usually gives best results on targets. Mirage and other factors can make max magnification tough to use at times, so simply use the magnification level that you are most comfortable with, knowing your best precision will come with your best view.</p><p></p><p>[ QUOTE ]</p><p>2) Should the power setting remain the same thru-out the process of dialing my zeros at longer ranges?</p><p></p><p>[/ QUOTE ]</p><p>No, not necessary unless you can prove your scope shifts zero with a magnification change, which is easily tested. Your Loopy shouldn't.</p><p></p><p>[ QUOTE ]</p><p>3) What is the effect on MOA adjustments at various powers?</p><p></p><p>[/ QUOTE ]</p><p>It depends on your scope's internal design. Not sure how *your* 6.5-20 is set up, IIRC, it's a second focal plane scope.</p><p></p><p>If the scope has a "first focal plane" reticle, the reticle size will vary with magnification, as does the image, and you can use the same values for your reticle graduations throughout the magnification range.</p><p></p><p>If it's a "second focal plane" reticle (more common), the reticle will stay at a fixed size and the image will vary with magnification. In this case, one must always use the magnification setting indicated for ranging, usually the max magnification. Other magnifications will change the value of the reticle graduations and one will either have to compensate for this or disregard the graduations at that time.</p><p></p><p>[ QUOTE ]</p><p>4) What other questions should I have asked?</p><p></p><p>[/ QUOTE ]</p><p></p><p>Good question. /ubbthreads/images/graemlins/wink.gif</p></blockquote><p></p>
[QUOTE="eshell, post: 158257, member: 5747"] +1 SuperMag. [ QUOTE ] 1) What power should be used in sighting-in the rifle at a 200yd zero? [/ QUOTE ] With a good quality scope, point of impact will be the same, so it doesn't matter from taht aspect and higher magnification usually gives best results on targets. Mirage and other factors can make max magnification tough to use at times, so simply use the magnification level that you are most comfortable with, knowing your best precision will come with your best view. [ QUOTE ] 2) Should the power setting remain the same thru-out the process of dialing my zeros at longer ranges? [/ QUOTE ] No, not necessary unless you can prove your scope shifts zero with a magnification change, which is easily tested. Your Loopy shouldn't. [ QUOTE ] 3) What is the effect on MOA adjustments at various powers? [/ QUOTE ] It depends on your scope's internal design. Not sure how *your* 6.5-20 is set up, IIRC, it's a second focal plane scope. If the scope has a "first focal plane" reticle, the reticle size will vary with magnification, as does the image, and you can use the same values for your reticle graduations throughout the magnification range. If it's a "second focal plane" reticle (more common), the reticle will stay at a fixed size and the image will vary with magnification. In this case, one must always use the magnification setting indicated for ranging, usually the max magnification. Other magnifications will change the value of the reticle graduations and one will either have to compensate for this or disregard the graduations at that time. [ QUOTE ] 4) What other questions should I have asked? [/ QUOTE ] Good question. [img]/ubbthreads/images/graemlins/wink.gif[/img] [/QUOTE]
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How to sight in a rifle - The proper use of variable power scopes
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