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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Mil-Dot ????
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<blockquote data-quote="sscoyote" data-source="post: 597133" data-attributes="member: 1133"><p>Chris--yes, subtension is power specific with SFP reticles such as the one u have there. The Nikon MD's are cald. typically for 12 and at 14 it oughtta' be about 3.1 IPHY (12/14x3.6). I always use my optics at their highest power for downrange zeroing and rangefinding, so if i were RRF'ing with that optic i'd go straight to the slightly more accurate 3.1 inch per 100 yds. subtension (14x) and apply the formula-- tgt. size x range of subtension/subtension/mil-reading=range</p><p></p><p>I.E. say a 10" steel tgt. that occupies .75 of the dot to dot spacing @ 14x (3.1" per 100 yds.)--</p><p></p><p>10x100/3.1/.75=430 yds.</p><p></p><p>I also suggest searching here about RRF'ing (and Snipershide.com). Playing with the math is fun IMO also.</p><p></p><p>There is a lot of info out there regarding mil-dot RRF'ing but very little regarding the application of any multi-stadia point for RR'ing, which is way bigger (and more fun) than mil-dot math itself, IMO.</p><p></p><p>In fact if your into this stuff, as it turns out the mil-ranging formula not only defines RRing with any multi-stadia reticle, and turret, but also downrange zeroing.</p></blockquote><p></p>
[QUOTE="sscoyote, post: 597133, member: 1133"] Chris--yes, subtension is power specific with SFP reticles such as the one u have there. The Nikon MD's are cald. typically for 12 and at 14 it oughtta' be about 3.1 IPHY (12/14x3.6). I always use my optics at their highest power for downrange zeroing and rangefinding, so if i were RRF'ing with that optic i'd go straight to the slightly more accurate 3.1 inch per 100 yds. subtension (14x) and apply the formula-- tgt. size x range of subtension/subtension/mil-reading=range I.E. say a 10" steel tgt. that occupies .75 of the dot to dot spacing @ 14x (3.1" per 100 yds.)-- 10x100/3.1/.75=430 yds. I also suggest searching here about RRF'ing (and Snipershide.com). Playing with the math is fun IMO also. There is a lot of info out there regarding mil-dot RRF'ing but very little regarding the application of any multi-stadia point for RR'ing, which is way bigger (and more fun) than mil-dot math itself, IMO. In fact if your into this stuff, as it turns out the mil-ranging formula not only defines RRing with any multi-stadia reticle, and turret, but also downrange zeroing. [/QUOTE]
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