Talk:Minute of Angle

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This should be merged info Minute of arc - note that Minute of angle with lower-case angle already is redirect there. AliveFreeHappy (talk) 20:54, 6 October 2010 (UTC)


I should have added my paragraph here instead of the main page. This is my first contribution and I'm still figuring things out. The paragraph I added is: "Minute of Angle is a linear effect, not quadratic. That is: twice the distance will result in twice the deviation. The value of 1 MOA @ 100 yds is 1.04719758 inches. In linear progression, 1 MOA is equal to 0.52359879 inches @ 50 yds and to 2.09439516 inches @ 200 yds. It is basically the measure of the opposite side of a rectangle triangle with a 1 MOA (1/60th of 1 deg) "A" angle".

It's a correction on the original text that states the deviation follows a quadratic effect (which is wrong). It should also be noted that:

  • The deviation of a projectile from it's ideal straight line path due to gravity is called 'drop'. Without air-induced drag the bullet would follow a parabolic path.
  • The deviation of a projectile due to wind is called 'drift'.

When the term 'MOA' is used in reference to the accuracy of a firearm it is expressing the inherent capacity of the firearm to shoot bullets down 'the same' trajectory and has nothing to do with drop or drift. A rifle capable of 1 MOA accuracy is a rifle that is inherently capable of shooting bullets down trajectories that don't deviate more than 1/60th of a degree one from another, all conditions being the same. That deviation can be translated into an equivalent "hit to hit" distance at a known distance using the trigonometric formula for TanA Trigonometric_functions. —Preceding unsigned comment added by RVZoo (talkcontribs) 19:49, 3 December 2010 (UTC)