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The Basics, Starting Out
What does Minute Of Angle mean?
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<blockquote data-quote="Hugnot" data-source="post: 2654321" data-attributes="member: 115658"><p>circumference of circle = 2 * pi * radius</p><p>circumference of circle with 100-yard radius in inches = 2 * 3.14 * 100 * 36 = 22,608 inches</p><p>degrees in circle = 360</p><p>minutes in circle = 360 * 60 = 21,600</p><p></p><p>minutes of angle @ 100 yards = 22,608/21,600 = 1.047 MOA</p><p></p><p>circumference of circle with 1,000-yard radius in inches = (2 * 3.14 * 1000 * 36) = 226,080</p><p>minutes of angle @ 1,000 yards = 226,080/21,600 = 10.047 MOA</p><p></p><p>minutes of angle at 500 meters?</p><p></p><p>1 meter = 39.37 inches, 1 yard = 36 inches</p><p>500 meters = 546.8 yards = 19,685 inches</p><p>circumference of circle with 500-meter radius in inches = (2 * 3.14 * 19,685) = 123,622</p><p>minutes of angle @ 500 meters = 123,622 / 21,600 = 5.72 MOA or real close to 5.75 MOA - enough to miss when assuming 5 inches or 5 MOA at 500 meters.</p><p></p><p>I like MRAD scopes having .1 MRAD adjustments with matching MRAD reticles.</p><p></p><p>Post 1 21 years ago, about 1/5 of a century. Post 1 must have been from ancient LRH archives.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2654321, member: 115658"] circumference of circle = 2 * pi * radius circumference of circle with 100-yard radius in inches = 2 * 3.14 * 100 * 36 = 22,608 inches degrees in circle = 360 minutes in circle = 360 * 60 = 21,600 minutes of angle @ 100 yards = 22,608/21,600 = 1.047 MOA circumference of circle with 1,000-yard radius in inches = (2 * 3.14 * 1000 * 36) = 226,080 minutes of angle @ 1,000 yards = 226,080/21,600 = 10.047 MOA minutes of angle at 500 meters? 1 meter = 39.37 inches, 1 yard = 36 inches 500 meters = 546.8 yards = 19,685 inches circumference of circle with 500-meter radius in inches = (2 * 3.14 * 19,685) = 123,622 minutes of angle @ 500 meters = 123,622 / 21,600 = 5.72 MOA or real close to 5.75 MOA - enough to miss when assuming 5 inches or 5 MOA at 500 meters. I like MRAD scopes having .1 MRAD adjustments with matching MRAD reticles. Post 1 21 years ago, about 1/5 of a century. Post 1 must have been from ancient LRH archives. [/QUOTE]
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The Basics, Starting Out
What does Minute Of Angle mean?
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