Instruction Manual

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Using FX-MOA for ranging
Todeterminerangewithminuteofangle,dividethetarget’sknownsizeininchesbytheMOAmeasurementfromthereticle(thiscanbedoneatanymagnification)andthenmultiplyby100.Theresultisthedistance
in yards to the measured object.
Target size (inches) ÷ size in reticle (MOA) × 100 = Distance (yards) to Target
For example if we know that the outside diameter of an IPSC target
*
is 17.7” in diameter and it measures as 6 MOA (Fig. 4-2), the equation would be: 17.7 ÷ 6 × 100 = 295 yd. to the
target.
This method can be used to create a cheat sheet if you know your target size will be constant, by calculating distance at several MOA measurements.
For example with 17.7” targets:
1 MOA = 1770 yd.
2 MOA = 885 yd.
3 MOA = 590 yd.
4 MOA = 442.5 yd.
5 MOA = 354 yd.
6 MOA = 295 yd.
7 MOA = 252.9 yd.
8 MOA = 221.3 yd.
9 MOA = 196.7 yd.
10 MOA = 177 yd.
20 MOA = 88.5 yd.
30 MOA = 59 yd.
Using this method it can become quite easy to quickly estimate target range and then apply holdover. When combined with a laser rangefinder, the equation can be manipulated to
determine target size. It is important to remember that you must know the size of the target to estimate range or know the distance to estimate target size.
*
IPSC Target is the official target of the International Practical Shooting Confederation.
Fig. 4-2