how to figure moa at extended range

Discussion in 'Long Range Hunting & Shooting' started by Guest, Jun 4, 2001.

  1. Guest

    Guest Guest

    my rifle shoots 3 shots into 2" at 300 yards.i was told this was .66 moa.how did he figure this?formula?thanks
     
  2. Darryl Cassel

    Darryl Cassel Well-Known Member

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    Lets make this simple to understand and round off the differance. A MOA is not really one inch but, for explaining this, I will use the 1 inch method, which is real close.

    1" is one minute of angle (MOA) at 100 yds.
    2" is one MOA at 200 yds
    3" is one MOA at 300 yds
    4" is one MOA at 400 yds
    5" is one MOA at 500 yds and so on.

    For each 100 yds the MOA goes up accordingly.

    If you shot a 2" group at 300 yds that would be two thirds of a MOA at that distance (300 yds) which is .666 MOA . 2/3= .666 after you divide.

    To give added info ---At 1000 yards a 10" group is one MOA.

    Each click with a 1/4 Min scope will change bullet impact(Elevation or windage) 1/4" at 100 yds.
    At 200 yds each click will move impact 1/2".At 300 yards 3/4" At 400 yds 1"---At 1000 yards 10 X 1/4"= 2 1/2" of impact change.
    At 2000 yds 20 X 1/4" = 5" of impact change for EACH click of your scope.

    Get a ballistics program for your computer like the Oehler and run the different yardages you intend to shoot. It will give you a complete printout for anything you want to know.

    Hope this helped you.

    DC [​IMG]

    [ 06-05-2001: Message edited by: Darryl Cassel ]
     
  3. Warren Jensen

    Warren Jensen Well-Known Member

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    Darryl's explanation is good.

    Just for accuracy's sake, 1 MOA=1.047" @ 100 Yds.
     
  4. druid

    druid Member

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    A minute of angle is roughely 1 inch at 100 yards 2 inches at 200 yards 3 inches at 300 yards. 3 devided by 2 is 2/3 or .66 moa.
     
  5. Korhil78

    Korhil78 Well-Known Member

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    Wow...I was 23 years old and just getting out of college when this thread was going on.
     
  6. druid

    druid Member

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    The 100% correct way is 1.047inches of angle for each 100 yards The person that gave you that reply knew what he was about. A moa. is 1/60th of a degree. at 100 yards that works out to 1.047 inches twice that at 200 yards and so on. and a mil is 3.5 moa or 1 yard at 1000 yards. I prefer moa because its one less function to deal with.
     
  7. Gene R.

    Gene R. Well-Known Member

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    It was long ago he doesn't even have a name anymore, just a nameles poster, poor guy.:D

    Gene
     
  8. rscott5028

    rscott5028 Well-Known Member

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    I think the OP was Bryan Litz when he was a kid.
    He must've changed his handle to save face.
    Just look at him now. :)
     
  9. Gene R.

    Gene R. Well-Known Member

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    Now thats some funny $hit there! good one.

    Gene
     
  10. druid

    druid Member

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    1.047 times range in 100 yard increments, 1400 yards= 14, 14x1.047=14.658 moa
    Why do you keep akking me this?
     
  11. Broz

    Broz Well-Known Member

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    Who is asking??? The ghost of poster past??:D

    Jeff
     
  12. winmag

    winmag Well-Known Member

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    Schizophrenia can do that to a guy.....
    Druid, it seems, like digging up OLD bones. This ain't the first ancient thread he's dusted off. But, as long as it keeps the little voices in his head happy.....:D
     
  13. majohnson

    majohnson Active Member

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    I think one key is that the turrets and the reticle are a match, it makes it easier. Doing the math isn't that hard, using a ballistics program is the fastest and most accurate way of figuring out the setting.

    The factor that needs to be accurate is your muzzle velocity, all the program calculators require an accurate velocity number. If not its like that old saying, garbage in garbage out. All that expensive equipment won't mean much without a chronograph.
     
  14. RMulhern

    RMulhern Well-Known Member

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    11 year old post should have been wiped out/trashed long ago!!:rolleyes: