Bushnell Nitro Owner's Manual page 6

Federal Cartridge .277 dia. 270 Win, 150 gr. Ballistic Tip at 3060 fps
Federal Cartridge .277 dia. 270 Win, 150 gr. Partition at 3000 fps
Remington Arms .277 dia. 270 Win, 140 gr. PSPCL Ultra at 2925 FPS
Remington Arms .277 dia. 270 Win, 150 gr. SPCL at 2850 FPS
Winchester .277 dia. 270 Win, 150 gr. Partition Gold at 2930 FPS
Winchester .277 dia. 270 Win, 150 gr. PP-Plus at 2950 FPS
Federal Cartridge .308 dia. 30-06 Spring, 180 gr. AccuBond at 2700 FPS
Federal Cartridge .308 dia. 30-06 Spring, 180 gr. Bear Claw at 2700 FPS
Remington Arms .308 dia. 30-06 Springfield, 180 gr. A-Frame at 2700 FPS
Remington Arms .308 dia. 30-06 Springfield, 180 gr. BRPT at 2700 FPS
Winchester .308 dia. 30-06 Sprg, 180 gr. FailSafe at 2700 FPS
Winchester .308 dia. 30-06 Sprg, 180 gr. Partition Gold at 2750 FPS
Federal Cartridge.308 dia. 300 WSM, 180 gr. AccuBond at 2960 fps
Federal Cartridge.308 dia. 300 WSM, 180 gr. Bear Claw at 3025 fps
Winchester .308 dia. 300 WSM, 180 gr. Ballistic Silver Tip at 3010 FPS
Winchester .308 dia. 300 WSM, 180 gr. Fail Safe at 2970 FPS
Remington Arms .308 dia. 300 R.S.A.U.M., 180 gr. PSPCL Ultra at 2960 FPS
Remington Arms .308 dia. 300 Wby Mag, 180 gr. PSPCL at 3120 FPS
After you have determined which ballistic group corresponds to your caliber and load, select this ballistic group
letter along with Rifle mode. The internal formula will determine amount of bullet drop/holdover in inches or
centimeters based upon distance, angle, and ballistics of your caliber and load.
What if your caliber is not listed?
While we have taken great care to include as many calibers and brand names in our ballistics tables, new loads are
always being developed. In addition, some shooters load their own ammunition with unique ballistic characteristics.
If you cannot find your load in our ballistic tables, you can still use the bullet drop feature of the laser rangefinder.
As above, sight in your rifle at 100 yds. Then shoot the rifle, without adjusting the riflescope, at 300 yds. Measure
the bullet drop from the point of aim. Using this drop, select the ballistic group from below. If you will be shooting
longer distances then you may want to check the bullet drop at 500 yds. Because there is enormous variation in rifle
barrels, chambers, and hand loads, you should thoroughly test the ballistic setting before actual hunting. You may
need to move up or down one group depending upon your tests.
After you have confirmed your selection of Rifle mode with the ballistic group you need (by pressing the Fire button
while it appears in the display), the next item is the Unit of Measure option (14). Pressing the Mode button will toggle
the Units from the default "Y" (yards) to "M" (meters). Press the Fire button to confirm your selection (leave units set to
Yards, or change it to metric).
Next, you will see "SD", meaning Sight-In Distance. Briefly pressing the Mode button will cycle through a choice of 100,
150, 200 or 300 yards. Press the Fire button to confirm and save the setting when your preferred sight-in distance is
displayed.
Lastly, you will have a choice of formats for the bullet drop/holdover data that will appear in the secondary numeric
display (15), alternating with the incline angle in degrees: IN (inches)*, ML (Mils) or MOA (moa). Briefly press the Mode
switch to cycle through the 3 options, pressing the Fire button to confirm and save the setting when your preferred
bullet drop format is displayed. *Note: if the unit of measure was set to Meters (M), the bullet drop will be calculated and
displayed in centimeters rather than inches.
Rifle Mode Example
Line of sight is 376 yards, angle is -33 degrees, and the bullet-drop/holdover is 28 inches. ARC not only takes into
account ballistic data based off your caliber and load from distances of 100-800 yards, but also compensates for any
uphill and downhill angles which also affect bullet-drop.
Line of Sight = 376 Yards
Degree of Angle = -33°
6
Line of Sight = 376 Yards
Holdover/Bulletdrop =28 Inches
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