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USING MIL HASH RETICLES
The “Tactical” Bushnell Legend Ultra HD monocular (model #191144)
contains a mil-hash reticle, the most accurate means of range estimation
using a manual optical device.
RETICLE DESCRIPTION
The middle of this reticle contains 10 evenly spaced ticks arrayed outward
vertically and horizontally from the center. Each tick mark is 1 mil. The
remainder of the reticle contains tick marks every 10 mils (Fig. A).
RANGING WITH YOUR MIL-HASH RETICLE
The mil is an angular measurement -- 1/6400th of a circle -- which equals almost
precisely one yard at 1000 yards, or one meter at 1000 meters. This proportional
relationship makes possible a simple formula to compute distances:
The Measured Object’s Width or Height in Yards x 1000
Object’s Width or Height in Mils
This formula works equally well with meters, but don’t mix meters and yards:
Measure the object in yards to nd the distance in yards, use meters to yield
distances in meters.
Looking through your monocular, 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 fence posts, are best, but any object of known
dimensions will do. Measure the object’s height or width carefully in mils, compute
it according to the formula and you will find its range. Support your monocular
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 snoweld beside a fencepost;
having crossed the fence earlier, you know that the post is four feet high, or 1.33
yards. The fencepost measures 2.5 mils in your reticle.
1.33 yards x 1000 1330
2.5 mils 2.5
= Range in Yards
= 532 Yards
=
ENGLISH
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