MOA math****

icedragonmx

icedragonmx

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Just want to check my math on a shooting/math issue with converting from meters to yards and from mils to inches. If I shot a group measuring 24.44mm from center to center at 150 meters would this give me a MOA of .59 or has it been too long a day to try conversions of the top of my head. If someone could just give me a MOA on this group please:redface: Thanks
 
MOA=minute of angle= 1 degree divided by 60

Let's say you fire 2 shots, the muzzle and this 2 shots that printed on a target form a triangle. The angle between the 1st shot, muzzle, 2nd shot determine how accurate the rifle is, which is the MOA or 1/2 MOA or whatever this angle is refer to.
 
MOA is an angle, not a distance.

2 holes 1 inch apart, 100 yards (3600 inches) from the muzzle, the angle is InverseTangent (1/3600) = 0.0159 degree, covert it to MOA by mutiply 60, you get 0.954 of a MOA, round off to 1 MOA.
 
Cappy said:
2.444 centimeter = 0.962 204 724 inch

0.962 204 724 inch / 1.5 = 0.6414933 MOA
Click to expand...

150m= 164.04 yards
So then----> .962204724 / 1.6404= .58657moa?

I hate coversions but was looking at quoting MOA and a range to avoid the metric vs imperial confusion. I understand that MOA is the angle created by the two outermost shots of the group and that 10rd groups will more accuratly show the skills of the shooter/rifle combo than a 3 shot group. Just wanted a quick way to tell friends about my efforts to shoot sub 0.5moa at <300m(not there yet:redface:)
 
100 yards = 300 feet = 3600 inches

firing point is the center of a theorectical circle.
The 3600 inches mentioned above is the RADIUS of the circle.
The DIAMETER is TWICE the radius, or 7200 inches.
Diameter times Pi gives CIRCUMFERENCE
7200 x 3.14159 = 22619.448 inches circ.

A circle is 360 degrees.
Each degree is made up of 60 minutes.
360 x 60 = 21600

22619.448 divded by 21600 = 1.047196666666......... inches per minute of angle.
Not the usual "1 inch per 100 yards"
VERY close, but not exact.

And 1MOA at 1000 Y would be 10.47196666 inches
 
tootall has it correct, everybody else musta failed math.

A 300 foot radius circle has a circumference of 1,885 feet. That means 5.24 feet per degree. There are 60 minutes per degree, so 0.0873 feet per minute, or 1.047 inches per minute at 100 yards. Extrapolate linearly as a function of distance.
 
gunster said:
icedragonmx

Your original conversion was correct
Click to expand...

End of page two and yes thankyou!Lol I looked at it again after some needed sleep and had figured that it was close enogh to know that I need to shoot better still:p Will try for the sub-moa of .5 when I go out next time.;)
 
2007 06:51 PM
kens 1 MOA @ 100yds is about 1". 1 MOA at 1000 yds is about 10 inches

It's not about the math, its about the ability to do it.
 
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