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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
1st Focal Plane Reticle
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<blockquote data-quote="sscoyote" data-source="post: 377195" data-attributes="member: 1133"><p>I use both FFP and SFP with my optics and actually slightly prefer the SFP. I don't like using small reticles at low power. If i need to make a long shot with some time to spare the optic is always cranked to the highest power, and i don't range at a lower power except for a point blank range rangefinding system i establish with any reticle i happen to be using. But that system is only used when a quick shot is presented and always at closer ranges (<~300).</p><p></p><p>The best way to think of the subtension system with FFP and SFP is that the subtension of the reticle stays the same with FFP since the reticle shrinks and grows with magnification. Since the reticle does not get smaller or larger with a power change in SFP then the reticles subtensions (measurements downrange) have to change.</p><p></p><p>It doesn't make any difference what reticle you're using--MOA or mil or IPHY, u still have to calculate interpolation (in-between stadia figures--.3,.4,.5, etc.). At least for me i can't divide a number by another number that has a decimal fraction in my head while sitting at the computer screen drinking coffee, much less in the field.</p></blockquote><p></p>
[QUOTE="sscoyote, post: 377195, member: 1133"] I use both FFP and SFP with my optics and actually slightly prefer the SFP. I don't like using small reticles at low power. If i need to make a long shot with some time to spare the optic is always cranked to the highest power, and i don't range at a lower power except for a point blank range rangefinding system i establish with any reticle i happen to be using. But that system is only used when a quick shot is presented and always at closer ranges (<~300). The best way to think of the subtension system with FFP and SFP is that the subtension of the reticle stays the same with FFP since the reticle shrinks and grows with magnification. Since the reticle does not get smaller or larger with a power change in SFP then the reticles subtensions (measurements downrange) have to change. It doesn't make any difference what reticle you're using--MOA or mil or IPHY, u still have to calculate interpolation (in-between stadia figures--.3,.4,.5, etc.). At least for me i can't divide a number by another number that has a decimal fraction in my head while sitting at the computer screen drinking coffee, much less in the field. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
1st Focal Plane Reticle
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