Bushnell 191144 Using Mil Hash Reticles, Reticle Description, Ranging With Your Mil-Hash Reticle

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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	= Range in Yards
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 find 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 snowfield 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	= 532 Yards
2.5 mils		2.5

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