Bushnell 6x24 Prime 1300 Laser Rangefinder (Black) User Manual
Page 5
5
If he was to shoot as if the target was 32 yards away, he 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 +/- 70°.
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 (2), 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
G
Federal Cartridge.224 dia. 22-250 Rem, 60 gr. Partition at 3500 fps
F
Remington Arms .224 dia. 22-250 Remington Arms , 50 gr. V-Max at 3725 FPS
H
Remington Arms .224 dia. 22-250 Remington Arms , 55 gr. PSP at 3680 FPS
G
Winchester .224 dia. 22-250 Rem, 55 gr. Ballistic Silvertip at 3680 FPS
H
Winchester .224 dia. 22-250 Rem, 55 gr. PSP at 3680 FPS
G
Federal Cartridge .277 dia. 270 Win, 150 gr. Ballistic Tip at 3060 fps
F
Federal Cartridge .277 dia. 270 Win, 150 gr. Partition at 3000 fps
F
Remington Arms .277 dia. 270 Win, 140 gr. PSPCL Ultra at 2925 FPS
E
Remington Arms .277 dia. 270 Win, 150 gr. SPCL at 2850 FPS
D
Winchester .277 dia. 270 Win, 150 gr. Partition Gold at 2930 FPS
E
Winchester .277 dia. 270 Win, 150 gr. PP-Plus at 2950 FPS
E
Federal Cartridge .308 dia. 30-06 Spring, 180 gr. AccuBond at 2700 FPS
D
Federal Cartridge .308 dia. 30-06 Spring, 180 gr. Bear Claw at 2700 FPS
D
Line of Sight = 32Y
Degree of Angle = -52°
Compensated Distance = 23Y`