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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
New scope has me confused
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<blockquote data-quote="Hugnot" data-source="post: 2288499" data-attributes="member: 115658"><p>Great when the scope has a real mil dot reticle & .1 mil click values. At 500 yards 1 mil will cover 18 inches, at 250 yards 9 inches at 100 yards 3.6 inches & the numerous reticle features such as dot width, distance between dot edges, distance between dot centers & so on can be used to estimate ranges provided scope power in a 2nd FP is set to represent those values.</p><p></p><p>Calculations are simple-- 100 yards = 36 * 100 = 3600 = inches in 100 yards 1 mill is 1/1000 of whatever so 3600/1000 = 3.6 inches per mil at 100 yards. Lots of objects out there are close to 18 inches, so 36 * 500 = 18,000 inches per 500 yards, then 18,000/1000 = 18 inches per mil at 500 yard, or spanning the centers of 2 reticle dots.</p><p></p><p>100 meters = 100 * 100 cm = 10,000 cm in 100 meters, 10,000/1000 = 10 cm per mil at 100 meters, 1 inch = 2.54 cm, 10 cm/2.54 = 3.94 inches per mil at 100 meters. 1 yard = 36 inches, 1 meter = 39.37 inches. A .1 mil click value will get 1 cm at 100 meters. </p><p></p><p>Metric seems to be more simple but most of us think in yards & inches. A 46 cm wide object is about the same as an 18 inch wide object making my head hurt...... </p><p></p><p>Then there are NATO & other standards.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2288499, member: 115658"] Great when the scope has a real mil dot reticle & .1 mil click values. At 500 yards 1 mil will cover 18 inches, at 250 yards 9 inches at 100 yards 3.6 inches & the numerous reticle features such as dot width, distance between dot edges, distance between dot centers & so on can be used to estimate ranges provided scope power in a 2nd FP is set to represent those values. Calculations are simple-- 100 yards = 36 * 100 = 3600 = inches in 100 yards 1 mill is 1/1000 of whatever so 3600/1000 = 3.6 inches per mil at 100 yards. Lots of objects out there are close to 18 inches, so 36 * 500 = 18,000 inches per 500 yards, then 18,000/1000 = 18 inches per mil at 500 yard, or spanning the centers of 2 reticle dots. 100 meters = 100 * 100 cm = 10,000 cm in 100 meters, 10,000/1000 = 10 cm per mil at 100 meters, 1 inch = 2.54 cm, 10 cm/2.54 = 3.94 inches per mil at 100 meters. 1 yard = 36 inches, 1 meter = 39.37 inches. A .1 mil click value will get 1 cm at 100 meters. Metric seems to be more simple but most of us think in yards & inches. A 46 cm wide object is about the same as an 18 inch wide object making my head hurt...... Then there are NATO & other standards. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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New scope has me confused
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