Looking through your scope at the synchronized magnification setting, 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 rifle and be precise when measuring objects; any measuring error causes an error in the computed range. Equally, incorrectly 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

 

Since this is a variable power scope and the reticle stays the same size no matter the magnification, it must be set at the 12x index dot to synchronize the mil-dot size for ranging.

CALCULATING HOLDS FOR WIND AND MOVING TARGETS

Your horizontal mil dots provide a precise way of holding for crosswinds and target movement. Just look in your cartridge’s wind drift and moving target tables to determine the exact holds for different distances. The accompanying table lists one-mil widths from 100 to 600 yards, so you can calculate how many mils to hold right or left when firing in a crosswind, or engaging a moving target.

MIL WIDTH FOR WIND AND MOVING TARGET LEADS

 

Distance

One Mil at This Distance (Inches)

100 Yards

3.6”

(0.1 Yard)

200 Yards

7.2”

(0.2 Yard)

300 Yards

10.8”

(0.3 Yard)

400 Yards

14.4”

(0.4 Yard)

500 Yards

18.0”

(0.5 Yard)

600 Yards

21.6” (0.6 Yard)

1.One mil is the distance between center of dots. It’s easy to measure in half-mils or even quarter-mils but with practice you can measure tenths of a mil.

2.6x - Object measures half as large as 12x, so calculate the distance, then divide by half.

3.12x - Synchronized setting for this mil-dot reticle. Calculate as normal.

MAINTENANCE

Your Bushnell® YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE, though amazingly tough, is a precision instrument that deserves reasonably cautious care.

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Bushnell 20-4124EU manual Calculating Holds for Wind and Moving Targets, Maintenance

20-4124EU, 20-4124 specifications

The Bushnell 20-4124 and 20-4124EU models represent a significant advancement in the realm of binoculars, catering to outdoor enthusiasts, birdwatchers, and sporting event attendees. These models are designed to deliver a premium viewing experience while maintaining ergonomic efficiency and portability.

One of the standout features of the Bushnell 20-4124 and 20-4124EU is their powerful magnification capabilities. With a standard magnification of 8x, these binoculars enable users to get an up-close view of distant objects while still maintaining a wide field of view. This balance makes them ideal for various activities, whether spotting wildlife at a national park or watching a game from the stands.

The objective lens diameter of 42mm enhances light transmission, providing vibrant and clear images even in low-light conditions. This feature is particularly beneficial for dusk or dawn observations when many animals are most active, allowing users to capture details that would otherwise be missed.

The quality of optics is further boosted by the use of fully multi-coated lenses, which reduce light reflection and increase brightness and contrast. These advancements ensure that users experience sharp, high-contrast images with exceptional color accuracy, making nature observation more enjoyable.

Durability is another hallmark of the Bushnell 20-4124 and 20-4124EU. The robust construction includes a rugged, water-resistant housing, ensuring that they perform well in challenging weather conditions. This feature is particularly useful for outdoor adventures, where moisture and unpredictable elements are often encountered. The non-slip rubber armor provides a secure grip, enhancing usability in all situations.

Another innovative aspect lies in the convenience and versatility of the binoculars. The compact design makes them lightweight and easy to carry, while the adjustable eyecups allow for comfortable viewing, catering to users who wear glasses. Additionally, a close focus capability of roughly 15 feet enables users to observe nearby subjects clearly, increasing their utility for closer-range observations.

In conclusion, the Bushnell 20-4124 and 20-4124EU models exemplify modern binocular technology with their impressive magnification, superior optical quality, and durable design. These binoculars are perfect for various outdoor activities, offering users the ability to explore the world around them with clarity and precision.