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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
35 mm tube IOR's
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<blockquote data-quote="Brent" data-source="post: 17308" data-attributes="member: 99"><p><strong>Re: 35 mm tube IOR\'s</strong></p><p></p><p>I've got the manuals, and most all the spec sheets I've seen on them.</p><p></p><p>I think we're talking about the same thing, and agree that the NF scopes power setting changes the tic spacing in relation to the target image, only you are just defining this as a reticle in the 1st focal plane, where everyone else defines this as a 2nd focal plane reticle, correct?</p><p></p><p>What I was meaning to say in the post you quoted was just that, the reticle does not get visibly larger to the eye, but it does get larger in relation to the "Target" if going from 22x down to 11x, subtension is now 4 MOA between tics, not 2 MOA as they are at 22x. This has always been defined as a reticle in the 2nd focal plane. </p><p></p><p>The Springfield Armory scopes my dad has for instance, they are the eact opposite of this and are what I've always understood to be 1st focal plane reticles. The mildots in the SA scopes retain the 1 mil spacing no matter what power you select, unlike the NF scopes. </p><p></p><p>The only time the reticle in the NF scopes get visably larger is when the power level is turned "down", and you're looking through the scope through the "objective" back to the ocular lense. </p><p>The SA scopes reticle do not change size at all when doing looking through them backwards.</p><p></p><p>I used to put a white piece of paper behind the ocular lens and look back through the objective lens to line up my chronoghraph screens, setting it at 5.5x, the reticle was as large as possible. I did this until Ian suggested I use a laser to set up, thanks again Ian <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p></p><p>.....</p><p></p><p></p><p>When I adjust the eyepiece, I do it at 200 or 300 yards after I eliminate the parallax, then I focus the reticle. </p><p></p><p>Is it different for 1st and 2nd focal plane reticles? Am I doing it wrong too?</p></blockquote><p></p>
[QUOTE="Brent, post: 17308, member: 99"] [b]Re: 35 mm tube IOR\'s[/b] I've got the manuals, and most all the spec sheets I've seen on them. I think we're talking about the same thing, and agree that the NF scopes power setting changes the tic spacing in relation to the target image, only you are just defining this as a reticle in the 1st focal plane, where everyone else defines this as a 2nd focal plane reticle, correct? What I was meaning to say in the post you quoted was just that, the reticle does not get visibly larger to the eye, but it does get larger in relation to the "Target" if going from 22x down to 11x, subtension is now 4 MOA between tics, not 2 MOA as they are at 22x. This has always been defined as a reticle in the 2nd focal plane. The Springfield Armory scopes my dad has for instance, they are the eact opposite of this and are what I've always understood to be 1st focal plane reticles. The mildots in the SA scopes retain the 1 mil spacing no matter what power you select, unlike the NF scopes. The only time the reticle in the NF scopes get visably larger is when the power level is turned "down", and you're looking through the scope through the "objective" back to the ocular lense. The SA scopes reticle do not change size at all when doing looking through them backwards. I used to put a white piece of paper behind the ocular lens and look back through the objective lens to line up my chronoghraph screens, setting it at 5.5x, the reticle was as large as possible. I did this until Ian suggested I use a laser to set up, thanks again Ian [img]images/icons/smile.gif[/img] ..... When I adjust the eyepiece, I do it at 200 or 300 yards after I eliminate the parallax, then I focus the reticle. Is it different for 1st and 2nd focal plane reticles? Am I doing it wrong too? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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35 mm tube IOR's
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