Bushnell Nitro Owner's Manual page 5

(leave units set to Yards, or change it to metric) and exit the Setup Menu, returning to normal operation.
Bow Mode Example
The true horizonal distance is shown near the bottom of the display (15) , alternating with the tilt angle in degrees. For
example, a bowhunter in a tree stand may be aiming at a deer that is downhill at a -44
of sight distance is 32 yards, but he is likely to "overshoot" the target based on that. The THD distance (compensated
for the angle) reads 23 yards. That is the distance the hunter should base his shot upon.
Line of sight is 32 yards, angle is -44 degrees, and the Angle Range Compensated distance is 23 yards. Instead of
shooting as 32 yards, shoot as 23 yards. If you were to shoot as if 32 yards, you would shoot over the top of the deer
because of the severe angle.
If in BOW mode, the line of sight distance will display in the primary numeric display and the inclination and horizontal
distance will display in the secondary numeric displays. Bushnell® determined through extensive testing and
interviews with high-profile bow hunting experts that multiple bow ballistic groups were not necessary. Bow-hunters
want to know true horizontal distance because that is how they practice shooting, and once they confidently know
that, they can make any necessary adjustments. Giving the bow-hunter anything else other than horizontal distance
creates additional confusion and uncertainty.
Many people mistakenly believe that uphill shots perform differently from downhill shots because of gravity. However,
it is not due to gravity, but more of an aberration of the sighting system used on bows. The sighting pin on a bow
resides several inches above the mechanical axis of the arrow. For example, when one is aiming 23 degrees up an
incline, the arrow is at a different angle.
• RIFLE Mode(s) ( ): Calculates and displays the amount of bullet drop, at the target in inches, centimeters, Mils, or
MOA. The amount of bullet drop is determined by the line of sight distance to the target, degree of elevation, along
with the specific ballistic characteristics of the caliber and ammunition load. When you range your target, the line of
sight, degree of elevation, and bullet-drop/holdover in inches, centimeters, Mils, or MOA will be displayed from 100 to
800 yards/meters with a maximum inclination of +/- 90°.
One of eight ballistic groups (identified as A, B, C, D, E, F, G, and H) for center fire rifles and two ballistic groups
(Identified as I and J) for Black Powder / Muzzleloaders can be selected by the user, with each formula representing a
given combination of caliber and loads. The ballistic groups are selected by the user via the Setup menu. After entering
the Setup menu (by holding the Mode button for a few seconds), briefly press the Mode button until you see the
blinking Rifle icon (1), along with the letter for the ballistic group for your preferred ammo (or load).
Knowing Which Ballistic Group To Select
Bushnell engineers have researched currently available ballistic data and grouped many of the most popular calibers
and loads into eight ballistic groups (A,B,C,D,E,F,G,H). Once you know what caliber and load you are shooting
simply look through the chart to determine which one of the eight ballistic groups match with your particular load
and caliber. For Muzzleloaders, we have worked with PowerBelt Bullets to incorporate ballistic data into two ballistic
groups (I and J). Below are a few of the most popular caliber/load combinations. A complete list of approximately
2000 caliber and load combinations can be found on Bushnell's website (www.bushnell.com).
Popular Caliber & Load Combinations
Federal Cartridge.224 dia. 22-250 Rem, 55 gr. Bear Claw at 3600 fps
Federal Cartridge.224 dia. 22-250 Rem, 60 gr. Partition at 3500 fps
Remington Arms .224 dia. 22-250 Remington Arms , 50 gr. V-Max at 3725 FPS
Remington Arms .224 dia. 22-250 Remington Arms , 55 gr. PSP at 3680 FPS
Winchester .224 dia. 22-250 Rem, 55 gr. Ballistic Silvertip at 3680 FPS
Winchester .224 dia. 22-250 Rem, 55 gr. PSP at 3680 FPS
Line of Sight = 32Y Line of Sight = 32Y
Degree of Angle = -44° Compensated Distance = 23Y
relative to his position. The line
o
G
F
H
G
H
G
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