Bushnell NITRO Guia Del Propietario página 8

THE BUSHNELL DEPLOY™ MOA RETICLE (SFP)
1 MOA marks
5 MOA marks
RANGING WITH YOUR DEPLOY MOA RETICLE
There's an inverse relationship between how big an object appears and how far away it is. As the distance to an object increases, the size of the object appears to decrease. For example, say you are looking at an object that is 100 yds away.
If you moved the object closer so it was half that distance (50 yds) from your location, it would appear to be twice as large
(or half the size at 200 yds.
The relationship between your distance to an object and its perceived size allows you to estimate distance based on how
big or small the object appears, by using the marks in your reticle to measure its height or width in MOA (Minute of Angle)
or Mil (Milliradians). Using the apparent measurement of the target, you can determine the distance to the target. In order
for this to work, you have to know the size of the target.
To calculate a target's distance with MOA, multiply the known size of the target in inches by 95.5 and then divide that
number by the size of the target measured in MOA through your scope:
The Measured Object's Width or Height in Inches x 95.5
Object's Width or Height in MOA
This formula can also be used to estimate the range in meters, by using 87.3 as the multiplier instead of 95.5, but still
entering the object's height or width in inches.
Looking through your scope (if an SFP model, be sure power is set per chart on previous page), select an object at the
distance you want to range -- an object whose width or height you know or can estimate accurately. Man-made objects
of uniform size, such as fenceposts, are best, but any object of known dimensions will do. Measure the object's height or
width carefully in MOA, compute it according to the formula and you will find its range. Support your rifle and be precise
when measuring objects; any measuring error causes an error in the computed range. Equally, a mistake in estimating the
object size results in a proportional range error.
Here's an example: A coyote is sunning himself in a snowfield beside a fencepost; having crossed the fence earlier, you
know that the post is about four feet high, or 48 inches. The fencepost measures 7 MOA in your reticle.
48 inches x 95.5
7 MOA
Unlike the Mil formula (see next section), this formula should only be used when working with target sizes in inches and
distances in yards. If needed, however, there are alternate numbers that can be used in the formula.
8
4584
= = 655 Yards
7
DEPLOY MOA RETICLE (SFP)
™
DIMENSIONAL SPECS
4.00
2.00
Note: 1 MOA marks on vertical (elevation) axis
are 2 MOA wide (for wind hold reference),
and 5 MOA marks on vertical axis are 4 MOA wide.
= Range in Yards
0.20
1.00 PATTERN
0.20
1.00 PATTERN
ALL DIMS IN MOA