i dont understand MOA.

Discussion in 'AR Talk' started by Grip, Jun 20, 2008.

  1. Jun 20, 2008 #1
    Grip

    Grip XDTalk 1K Member Founding Member

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    ive been looking into optic's, and i keep seeing MOA on everything...i understand it stand's for "minute of angle"...but what is MOA?

    is it possible to pick an optic that is the wrong MOA for my rifle?

    i have no clue what MOA is..

    for example:

    EOTech 512= reticle is 65 MOA ring w/ 1 MOA dot.

    Aimpoint Comp ML2= 4MOA

     
  2. Jun 20, 2008 #2
    Mercmar

    Mercmar XDTalk 5K Member

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    It's like when you see map coordinates in minutes and seconds.
     
  3. Jun 20, 2008 #3
    Joeywhat

    Joeywhat XDTalk 5K Member

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    It shows how accurate it is. Basically 1 MOA means a 1" circle at 100 yards. I think it's a little bit off of that, but it's close enough.
     
  4. Jun 20, 2008 #4
    EricCartmann

    EricCartmann XDTalk 1K Member

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    Minute of angle is pretty complicated, we all use the approximation to make it easy.

    The approximation is:
    At 100 yards it is 1"... so if you are 3 MOA too low at 100 yards, it means you are 3" too low @ 100 yards. Normally 4 clicks on a scope = 1 MOA. So if you are 3" too low at 100 yards then it means you need to go 12 clicks up, thats if your scope is 1/4 MOA per click. Some scopes are 1/8 MOA per click, some 1/2 MOA.

    At 200 yards 1 MOA = 2"

    At 300 yards 1 MOA = 3"

    etc

    etc

    MOA can also be used to measure groupings. If someone says I am 1/2 MOA groups, it means he is 1/2" at 100 yards, 1" at 200 yards, and 2" at 400 yards, etc.
     
  5. Jun 20, 2008 #5
    Joeywhat

    Joeywhat XDTalk 5K Member

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    Also, that means at 200 yards it's 2", 300 is 3", and so on. 2 MOA would double those figures. 1/2 MOA would halve them.
     
  6. Jun 20, 2008 #6
    The_Dave

    The_Dave XDTalk 500 Member

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    One Minute of Angle (MOA) equals roughly one inch at 100 yards.
     
  7. Jun 20, 2008 #7
    Grip

    Grip XDTalk 1K Member Founding Member

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    hmm...that clears it up a little better.

    so say i put an eotech 512 on my rifle, and at 100 yard's im 5 inches to low....would i go up 5 click's? because it is 1 MOA?
     
  8. Jun 20, 2008 #8
    Joeywhat

    Joeywhat XDTalk 5K Member

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    Generally speaking 1 click is 1/4". So 4 clicks/ MOA @ 100 yards. YMMV with whatever optics you're using. I've only used some basic hunting scopes. Check the manual to make sure it is the same for you.
     
  9. Jun 20, 2008 #9
    Grip

    Grip XDTalk 1K Member Founding Member

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    the manual will tell me what 1 click equal's correct?
     
  10. Jun 20, 2008 #10
    Joeywhat

    Joeywhat XDTalk 5K Member

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    I dunno...you have the manual, not me. Worst case you can either try it and find out for yourself, and contact the manufacturer, they would be able to tell you for sure.
     

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