Moa

Discussion in 'General Rifle Discussion' started by nate913, Aug 1, 2013.

  1. nate913

    nate913 New Member

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    When one is talking about shooting and groups. What does the term MOA mean. For instance, I read this, "Rifle is fully capable of sub moa groups as it sits"
     
  2. JTJ

    JTJ Well-Known Member Supporter

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    Look in the Sticky's in this heading (General Rifle Discussion). There is a very good one there on MOA.
     

  3. nate913

    nate913 New Member

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    Thanks JT, I will go check it out now.
     
  4. JonM

    JonM Moderator

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    moa stands for minute of angle.

    its 1.047" at 100yards. we tend to round it to 1"

    everytime the distance doubles so does that moa. so at 200 yards its 2.094" when you get out to 1000 yards its 10.47"

    if your scope has moa adjustments of 1/4 moa at 100 yards it will move the impact .26175 at 200 yards it will move .5235 inches and at 1000 yards each click will move the impact 2.6175 inches.

    when you go the other way from 100 to 50 the ammount of moa is divided in half whenver the distance decreases by half. so at 50 yards 1 moa is .5235 and each click will move impact by .130875 inches and so on.
     
  5. cblowe13

    cblowe13 New Member

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    Ahhh that was confusing
     
  6. JonM

    JonM Moderator

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    its a division of a circle with 360 sections. kinda like a slice of pie. if the pie was 100 yards diameter each slice would be 1.047 inches wide at the edge. no matter how big the circle is the outer edge will be a certain distance wide and gets wider and smaller at a known ratio.

    its how navigators navigate and how artillery is aimed. it also translates into shooting because you can use that measurement to determine how far away an object is and how much adjustment is needed for a bullet to strike an object at a given distance.
     
    Last edited: Aug 1, 2013
  7. cblowe13

    cblowe13 New Member

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    Thank you jon
     
  8. Gh0zt36

    Gh0zt36 Active Member

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    Or MOA for dummies like me . 1" spread per 100 yards. .5" spread at 100 is sub moa. 2" spread at 100 yards is 2moa
     
  9. therewolf

    therewolf New Member

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    In most basic terms, it means you can put 3 rounds in a

    space the size of a @ quarter, at 100 yards.

    It IS a lot more complicated than that, but it's

    basically what it boils down to.
     
  10. cblowe13

    cblowe13 New Member

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    What is sub moa?
     
  11. JonM

    JonM Moderator

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    at 100 yards its about 1 inch. if your group measures .999 inches or less your shooting sub moa.

    sub is a prefix to words meaning its whatever the word is less of that.

    like marine means having to do with water submarine means under the water. subtract means make less of. so submoa would be less than moa
     
  12. c3shooter

    c3shooter Administrator Staff Member

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    Sub moa is less than 1 inch at 100 yds (more or less)

    shot group.jpg

    This shot group fired at 100 yds is a bit over a half inch wide. That is sub MOA. Moa would have been a 1 inch group at that distance.

    Not my target- pic I grabbed to illustrate-
     
    Last edited: Aug 1, 2013
  13. Gh0zt36

    Gh0zt36 Active Member

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    Sub MOA is any shot spread below its corresponding 1" per 100 yard ratio.

    Again 1" grouping at 100 yards is 1 MOA so if you had a 1/2 in grouping at 100 yards that is .5 or sub moa. That works the same all the way up the ladder.

    3" spread at 300 yards is 1 MOA anything below 3" at the range is sub MOA just depnds on how much 1" spread at 300 yards would be I believe .33 MOA
     
  14. hoovco

    hoovco New Member

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    1 minute is 1/60th of a degree from the point of origin.
     
  15. therewolf

    therewolf New Member

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    Basically sub, in this instance simply means

    "less than". So "sub-MOA" would mean you could

    cover the three holes in a target, at 100 yards,

    completely, with a nickel, give or take.
     
  16. chloeshooter

    chloeshooter New Member

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    MOA - minute of arc
    MOD - minute of deer
    MOE - minute of elk
    MOO - don't shoot unless it's your cow
     
  17. therewolf

    therewolf New Member

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    Yo, don't forget the milsurp special,

    "Minute of Frisbee" AKA "Minute of Pieplate"...:D
     
  18. nate913

    nate913 New Member

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    Very well explain. Thank you for your time and reply