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  2. Minute and second of arc - Wikipedia

    en.wikipedia.org/wiki/Minute_and_second_of_arc

    If a shot requires an adjustment of 20 MOA or more, the difference between true MOA and SMOA will add up to 1 inch or more. In competitive target shooting, this might mean the difference between a hit and a miss. The physical group size equivalent to m minutes of arc can be calculated as follows: group size = tan(⁠ m / 60 ⁠) × distance.

  3. Military operations area - Wikipedia

    en.wikipedia.org/wiki/Military_operations_area

    The MOA system was established around mid-1970s after a few military-civilian aircraft midair collisions and near misses. [2] Whenever an MOA is active, nonparticipating IFR traffic may be cleared through the area provided ATC can ensure IFR separation; otherwise, ATC will reroute or restrict nonparticipating IFR traffic.

  4. Mechanism of action - Wikipedia

    en.wikipedia.org/wiki/Mechanism_of_action

    In pharmacology, the term mechanism of action (MOA) refers to the specific biochemical interaction through which a drug substance produces its pharmacological effect. [2] A mechanism of action usually includes mention of the specific molecular targets to which the drug binds, such as an enzyme or receptor . [ 3 ]

  5. Mode of action - Wikipedia

    en.wikipedia.org/wiki/Mode_of_action

    In comparison, a mechanism of action (MOA) describes such changes at the molecular level. [ 2 ] [ 1 ] A mode of action is important in classifying chemicals, as it represents an intermediate level of complexity in between molecular mechanisms and physiological outcomes, especially when the exact molecular target has not yet been elucidated or ...

  6. Red dot sight - Wikipedia

    en.wikipedia.org/wiki/Red_dot_sight

    Red dots for rifles typically have a smaller dot, often 0.6 to 0.8 mrad (2 to 3 MOA). When red dot sights started to appear at the practical shooting competition circuit in the 1990s, reticle sizes of up to 3, 4.5 or even 6 mrad (10, 15 or 20 MOA) were common in order to compensate for the lack of bright illumination.

  7. Memorandum of understanding - Wikipedia

    en.wikipedia.org/wiki/Memorandum_of_understanding

    In business, an MoU is typically a legally non-binding agreement between two (or more) parties, outlining terms and details of a mutual understanding or agreement, noting each party's requirements and responsibilities—but without establishing a formal, legally enforceable contract (though an MoU is often a first step towards the development of a formal contract).

  8. Ballistic table - Wikipedia

    en.wikipedia.org/wiki/Ballistic_table

    Example of a ballistic table for a given 7.62×51mm NATO load. Bullet drop and wind drift are shown both in mrad and MOA.. A ballistic table or ballistic chart, also known as the data of previous engagements (DOPE) chart, is a reference data chart used in long-range shooting to predict the trajectory of a projectile and compensate for physical effects of gravity and wind drift, in order to ...

  9. Shot grouping - Wikipedia

    en.wikipedia.org/wiki/Shot_grouping

    [1] [2] On the other hand, the grouping displacement (the distance between the calculated group center and the intended point of aim) is a measure of accuracy. Tightness of shot groupings are calculated by measuring the maximum distance between any two bullet holes on the target (center-to-center) in length measurements such as millimeters or ...