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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 ...
Two shot groupings obtained with different firearms at different distances. The group on the left measures about 13 mm and was fired at about 45 meters, which equals 13 mm / 45 m = 0.29 mils (1 ⁄ 2 in group at 50 yards, approx. 1.047′× 50 / 100 = 0.524′).
For reference a 1 MOA circle at 100 yd (91 m) has a diameter of 1.047 in (2.7 cm), 3 in (7.6 cm) at 100 yd (91 m) equals 2.9 MOA, and 5 in (12.7 cm) at 100 yd (91 m) equals 4.8 MOA In summary the accuracy standards of the Gewehr 98 and most other service rifles used in World War I and later were similar.
Following the so-called "quarter-girth formula" (the square of one quarter of the circumference in inches multiplied by 1 ⁄ 144 of the length in feet), the notional log is four feet in circumference, one inch of which yields the hoppus board foot, 1 foot yields the hoppus foot, and 50 feet yields a hoppus ton.
For comparison, a competition target or benchrest rifle may be capable of accuracy up to 0.15–0.3 MOA (0.04–0.09 mrad). A 1 MOA (0.28 mrad) average extreme spread (the center-to-center distance between the two most distant bullet holes) for a 5-shot group translates into a 69% probability that the bullet's point of impact will be in a ...
300 yards (274 m): 1.9 inches The radial distance from the calculated center of impact of the first target compared to the calculated center of impacts of the subsequent targets shall be less or equal to 1.086 MOA (3.3 inches @ 300 yards, 2.2 inches @ 200 yards, 2.4 inches @ 200 meters) on an average basis.
The first Mad Minute record was set by Sergeant Major Jesse Wallingford in 1908, scoring 36 hits on a 48-inch target at 300 yards (4.5 mils / 15.3 moa). [ 1 ] Another world record of 38 hits, all within the 24 inch target at 300 yards (2.25 mils / 7.6 moa), is said to have been set in about 1914 by a Sergt.-Instructor Snoxall. [ 2 ] '
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