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The subtension is linear with the distance, for example, at 500 yards, 1 MOA subtends 5.235 inches, and at 1000 yards 1 MOA subtends 10.47 inches. Since many modern telescopic sights are adjustable in half ( 1 / 2 ), quarter ( 1 / 4 ) or eighth ( 1 / 8 ) MOA increments, also known as clicks , zeroing and adjustments are ...
Handguns are typically less accurate; at a shooting distance of 25 yd, a grouping is considered acceptable for self-defense if the shots fall within a circle of 4 to 5 inches, which is 15 to 19 MOA (equivalent to a grouping of 100-150 mm at 25 meters, which is 4-6 mils), [9] representing the shot pattern needed to hit the vital organs of a ...
Conversion of various sight adjustment increment Increment, or click (mins of arc) (milli-radians) At 100 m At 100 yd 1 ⁄ 12 ′ 0.083′ 0.024 mrad 2.42 mm 0.242 cm 0.0958 in 0.087 in 0.25 ⁄ 10 mrad 0.086′ 0.025 mrad 2.5 mm 0.25 cm 0.0985 in 0.09 in 1 ⁄ 8 ′ 0.125′ 0.036 mrad 3.64 mm 0.36 cm 0.144 in
If using the imperial units yards for distance and inches for target size, one has to multiply by a factor of 1000 ⁄ 36 ≈ 27.78, since there are 36 inches in one yard. distance in yards = target in inches angle in mrad × 27.78 {\displaystyle {\text{distance in yards}}={\frac {\text{target in inches}}{\text{angle in mrad}}}\times 27.78}
Minutes is another convenient measure for shooters using English units, since 1 MOA approximately subtends 1.0472 inches at a distance of 100 yards (91.44 m), which is generally rounded to 1 inch at 100 yards. While MOA sights have traditionally been popular in the U.S., scope sights with mrad adjustments and reticles are now also becoming ...
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For example, a rifle capable of firing a ½ or 0.5 MOA (approximately 0.5 inch center to center of the two holes furthest apart) 5-round group (often referred to as "grouping") at 100 yards will theoretically fire a 12.5 inch group at 2,500 yards (0.5 × 2,500/100 = 12.5). Unless the group is centered perfectly on the target at 100 yards, the ...
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