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Long Range Hunting & Shooting
What's a MilDot?
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<blockquote data-quote="morcey2" data-source="post: 928679" data-attributes="member: 71004"><p>A Mil-Dot is 1/1000th of a dot. They're very hard to see. That's why only snipers can use mil-dot scopes because of their great eyesight. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>There are two types of adjustable scopes to think about, first-focal-plane reticle and second-focal-plane reticle. </p><p></p><p>On a first-focal-plane scope, the reticle appears to change size as the magnification is changed. On these scopes, the distance between the mil-dots at a given range will be constant. At 100 yards, it should be 3.6" or whatever the manufacturer specifies as the subtension since there are several slightly different values for a miliradian depending on who you ask.</p><p></p><p>On a second-focal-plane scope, there will be one specific magnification level where the subtension matches the specification. On most scopes, it's the highest magnification level. I've got 3 mil-dot scopes, all 2nd focal plane, and all of them are correct at the right magnification. </p><p></p><p>You may need to be a little more specific in your question because if you have a scope where it's not the correct subtension at the specified magnification, the manufacturer should fix it for you. </p><p></p><p>Matt</p></blockquote><p></p>
[QUOTE="morcey2, post: 928679, member: 71004"] A Mil-Dot is 1/1000th of a dot. They're very hard to see. That's why only snipers can use mil-dot scopes because of their great eyesight. :D There are two types of adjustable scopes to think about, first-focal-plane reticle and second-focal-plane reticle. On a first-focal-plane scope, the reticle appears to change size as the magnification is changed. On these scopes, the distance between the mil-dots at a given range will be constant. At 100 yards, it should be 3.6" or whatever the manufacturer specifies as the subtension since there are several slightly different values for a miliradian depending on who you ask. On a second-focal-plane scope, there will be one specific magnification level where the subtension matches the specification. On most scopes, it's the highest magnification level. I've got 3 mil-dot scopes, all 2nd focal plane, and all of them are correct at the right magnification. You may need to be a little more specific in your question because if you have a scope where it's not the correct subtension at the specified magnification, the manufacturer should fix it for you. Matt [/QUOTE]
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What's a MilDot?
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