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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
First focal plain vs second focal plain
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<blockquote data-quote="FTRshooter" data-source="post: 1821155" data-attributes="member: 112707"><p>No, that is not correct.</p><p></p><p>In an SFP, a reticle with subtension marks will have these marks represent something at specific magnifications. Well, to be exact they represent something specific at ALL magnifications, it's just that the relation changes for all magnification and it's difficult to remember them all.</p><p></p><p>So, I will speak about my SFP scope that I use for competition. This March-X 5-50X56 has an MTR-5 reticle with hash marks on the horizontal and bottom vertical lines that represent 4MOA @ 5X, 2MOA @ 10X, 1MOA @ 20X, 0.5MOA at 40X and 0.4MOA at 50X.</p><p></p><p>Of course, intermediate magnifications make the subtensions on the reticle mean intermediate values, such as 1.33MOA @ 15X.</p><p></p><p>So I, being an older geezer, usually stick with one magnification, 40X, so that the reticle has a consistent meaning.</p></blockquote><p></p>
[QUOTE="FTRshooter, post: 1821155, member: 112707"] No, that is not correct. In an SFP, a reticle with subtension marks will have these marks represent something at specific magnifications. Well, to be exact they represent something specific at ALL magnifications, it's just that the relation changes for all magnification and it's difficult to remember them all. So, I will speak about my SFP scope that I use for competition. This March-X 5-50X56 has an MTR-5 reticle with hash marks on the horizontal and bottom vertical lines that represent 4MOA @ 5X, 2MOA @ 10X, 1MOA @ 20X, 0.5MOA at 40X and 0.4MOA at 50X. Of course, intermediate magnifications make the subtensions on the reticle mean intermediate values, such as 1.33MOA @ 15X. So I, being an older geezer, usually stick with one magnification, 40X, so that the reticle has a consistent meaning. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
First focal plain vs second focal plain
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