Pat has the definition and GLV (hi George) has the measurement for 100 yards.

As Pat indicates a Minute is 1/60th of a degree and we all

**Know** that a circle has 360 of those.

**SO:**
360 degrees X 60 minutes per degree equals

**21,600 minutes** in a circle.

The circumference of a circle equals Pi X Diameter or

**3.14 X Diameter**
Diameter(equals 2X [the radius for a 100 yard MOA] (100 yards X 36 inches)=

**7200** inches)

So.. 3.14 X 7200 = 22608 inches around a circle of 200 yards in diameter.

The circumference of 22608/21600 minutes in a circle =

**1.047" subtended by an angle of One minute** at a radius of 100 yards.

Hence:

**One Minute of Angle = 1.047" at 100 yards**

One Minute of angle = 5.233" at 500 yards

One Minute of Angle = 10.47" at 1000 yards
No mystery here, just simple geometry.

Hope this helps!

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Ni ellegimit carborundum esse!

Yours In Marksmanship

http://www.1bigred.com/distinguished
michael