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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
MilDot Calculations and zoom
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<blockquote data-quote="sscoyote" data-source="post: 287241" data-attributes="member: 1133"><p>Pete, all 2nd focal plane reticles that have more than one stadia point in them will change subtension (measurement) inversely with magnification (assuming the power ring is calibrated properly). Best to go out and measure it really to fine adjust it for any subtension u may want. If u go here and study you can see how the mil-ranging formula can be used with any reticle subtension--not just 3.6 inch per hundred yds. <a href="http://www.ottllc.com/specialtypistols/sp20.pdf" target="_blank">www.ottllc.com/specialtypistols/sp20.pdf</a> --Item C) Reticle Rangefinding</p><p></p><p>I have a 6-18x Nikon Buckmasters mil-dot on a 17 Fireball XP-100 handgun that i use for prairie dogs. That optic is cald. for 12x. At 18 the mil-dot subtension is 66% smaller at 2.4 IPHY (12x is 66% of 18x). Dot itself is now a 1/2" dot instead of 3/4". I use this system for windage and turrets for elevation.</p></blockquote><p></p>
[QUOTE="sscoyote, post: 287241, member: 1133"] Pete, all 2nd focal plane reticles that have more than one stadia point in them will change subtension (measurement) inversely with magnification (assuming the power ring is calibrated properly). Best to go out and measure it really to fine adjust it for any subtension u may want. If u go here and study you can see how the mil-ranging formula can be used with any reticle subtension--not just 3.6 inch per hundred yds. [url]www.ottllc.com/specialtypistols/sp20.pdf[/url] --Item C) Reticle Rangefinding I have a 6-18x Nikon Buckmasters mil-dot on a 17 Fireball XP-100 handgun that i use for prairie dogs. That optic is cald. for 12x. At 18 the mil-dot subtension is 66% smaller at 2.4 IPHY (12x is 66% of 18x). Dot itself is now a 1/2" dot instead of 3/4". I use this system for windage and turrets for elevation. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
MilDot Calculations and zoom
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