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# Moa or Mrad? So confused!

07-27-2013, 02:33 PM   #11
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Thanks and I hate too see people get lost In this stuff so, let me know if I can lend a hand.

Regards,
CK

07-28-2013, 11:58 PM   #12
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A mil scale reticle is not metric - it has no measurement associated with it. A radian is a trig function. If you measure from the center of a circle to the edge that is a radius. If you take that distance and measure along the edge of the circle to the next point and then draw a line to the center of the circle you make a pie wedge shaped section - that is a radian.

A circle has 2 Pi radians or Pi x 2 = 6.283 (approximately). There are 6.283 radians in a circle. A "mil" is a measurement of 1/1000 so if you multiply 6.283 x 1000 = 6,283 mili-radians in a circle.

For minutes of angle, there are 360 degrees and 60 minutes or 21,600 minutes of angle in a circle.

To convert between them - 21,600 / 6,283 = 3.44 MOA per mili-radian.

So far - no fixed measurement of inches, feet, centimeters, miles, kilometers, etc. Each is just a description of the arc of a circle.

Now, if you want to use a scope with a mili-radian reticle for target range estimation you can do that IF the scope has a front focal plane (FFP) reticle. You need that because the reticle mil measurement needs to stay proportional to the amount of magnification.

One Mil subtends 3.6 inches at 100 yards, 7.2 inches at 200 yards, 14.4 inches at 400 yards, 28.8 inches at 800 yards, and a handy 36-inches (1 yard) at 1,000 yards.

So, you can use the FFP Mil reticle to estimate distances. The calculation is: (height or width of the target in yards / number of Mils on the reticle) x 1,000 = yards.

If you have a known target height - let's say 6-feet that's 2 yards. If the target takes up 4 Mils on the vertical reticle then (2/4 =.5) x1000=500 - so your target would be 500 yards away.

As you can see - all you have to do is understand the system whether it is Mil or MOA, and apply it to your own use.

I like FFP Mil reticles as they are simple to use for range estimation once you understand the system.

Last edited by buckhorn_cortez; 07-29-2013 at 12:17 AM.

07-29-2013, 01:00 PM   #13
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A lot has to do with what you are use to. I grew up with MOA and even when I was a BU sniper I stuck with it because I was use to it and could us it just as effectively as MILS. But I agree for hunting, unless you are already using MILS, stick with MOA. But back then we did not have the fancy hi-tech stuff you kids have now!!!
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07-29-2013, 01:21 PM   #14
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Quote:
 Originally Posted by JimRau A lot has to do with what you are use to. I grew up with MOA and even when I was a BU sniper I stuck with it because I was use to it and could us it just as effectively as MILS. But I agree for hunting, unless you are already using MILS, stick with MOA. But back then we did not have the fancy hi-tech stuff you kids have now!!!
A Mil scale is that confusing and difficult? Really? Then buy a Mil Dot Master calculator and put it in your coat pocket. It will even help you figure out bullet drop compensation for a given range.

07-30-2013, 01:44 AM   #15
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Quote:
 Originally Posted by buckhorn_cortez A Mil scale is that confusing and difficult? Really? Then buy a Mil Dot Master calculator and put it in your coat pocket. It will even help you figure out bullet drop compensation for a given range.
Who said it was confusing???
I have scopes with both. I was giving advise to a person who ask for it. Like I said, if you are already using and are comfortable with one or the other there is no reason to change. And I agree with several others, if you are not using either start with a MOA, standard hunting scope, it is easier to use and the mil dots are not need for big game hunting, although I have used both for hunting and sniper duty.
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07-30-2013, 09:11 PM   #16
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I got a ?? someone on youtube was complaining bout a shot they made.

it was a 500 yard shot with a 2 1/2" spread.

They were calling that 5 MOA.

Wouldn't that be a .5 MOA ??

As far as I know its 1" spread per 100 yards is 1 MOA so a 5 MOA shot at 500 yards would be a 25" inch spread no ?
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Last edited by Gh0zt36; 07-30-2013 at 09:13 PM.

07-30-2013, 09:20 PM   #17
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Quote:
 Originally Posted by Gh0zt36 I got a ?? someone on youtube was complaining bout a shot they made. it was a 500 yard shot with a 2 1/2" spread. They were calling that 5 MOA. Wouldn't that be a .5 MOA ?? As far as I know its 1" spread per 100 yards is 1 MOA so a 5 MOA shot at 500 yards would be a 25" inch spread no ?
You are correct, a 2.5" spread at 500 yards is 1/2 Moa.

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