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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
MRAD vs MOA
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<blockquote data-quote="RBetts" data-source="post: 358557" data-attributes="member: 22077"><p>2nd focal plane ranging can be done this way but you need to know your subtensions of the reticle. I'll use the Nikon 4-14 Monarch for I use that on my song dog gun. The reticle subtends 18.81 at 4x between the heavy duplex wires at 100yds. That means from the center it is 9.405 at 4x at 100yds to any heavy post. A coyote is about 10" from back to the bottom of chest where I hunt. If I have a dog out a ways I dial in the power ring. say at 8x the dog fits my center wire to heavy post. That should be 400. Because they run big I add 25yds and hold center. If it's between the powers say 8.5x add accordingly.</p><p> A mil dot in 2nd plane will will be set at 1 power check the directions with that scope then shoot at 100yds to confirm it.</p><p> A FFP scale never changes with the power setting The cross hair and scale whatever it is, is always the same size in relation to the object being measured with the scale. Either Mils or MOA you have to have a drop chart with the same language. If you have a mil-dot reticle and MOA turrets you need a MOA drop chart. If you have Mrad turrets you need to have your dope in Mrads unless you want to practice your math skills every time you shoot UKD. </p><p> I prefer mills but I cannot afford the FFP glass. I have learned 2nd plane reticle ranging for my application but it is rough by comparison to a good ffp system imho</p></blockquote><p></p>
[QUOTE="RBetts, post: 358557, member: 22077"] 2nd focal plane ranging can be done this way but you need to know your subtensions of the reticle. I'll use the Nikon 4-14 Monarch for I use that on my song dog gun. The reticle subtends 18.81 at 4x between the heavy duplex wires at 100yds. That means from the center it is 9.405 at 4x at 100yds to any heavy post. A coyote is about 10" from back to the bottom of chest where I hunt. If I have a dog out a ways I dial in the power ring. say at 8x the dog fits my center wire to heavy post. That should be 400. Because they run big I add 25yds and hold center. If it's between the powers say 8.5x add accordingly. A mil dot in 2nd plane will will be set at 1 power check the directions with that scope then shoot at 100yds to confirm it. A FFP scale never changes with the power setting The cross hair and scale whatever it is, is always the same size in relation to the object being measured with the scale. Either Mils or MOA you have to have a drop chart with the same language. If you have a mil-dot reticle and MOA turrets you need a MOA drop chart. If you have Mrad turrets you need to have your dope in Mrads unless you want to practice your math skills every time you shoot UKD. I prefer mills but I cannot afford the FFP glass. I have learned 2nd plane reticle ranging for my application but it is rough by comparison to a good ffp system imho [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
MRAD vs MOA
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