Above are a few of the most popular caliber / load combinations. The enclosed Ballistics CD contains approximately 1000 caliber and load combinations. Simply load the CD into your computer CD drive and follow the instructions on your screen. This complete list can also be found on Bushnell’s website (www.bushnell.com).
After you have determined which ballistic group corresponds to your caliber and load, select this ballistic group (See MENU SETUP above).
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.
NOTE: All bullet drop / holdover data for ballistic settings A, B, C, D, E, F, G, and H assumes the rifle has been sighted in at 100 yards. Bullet drop / holdover date for ballistic setting I and J assume the muzzleloader has been sighted in at 150 yards.
This
EXAMPLE
You have a 300 WSM and are shooting the following Winchester brand load: 180 gr. Ballistic Silver Tip bullet at 3010 FPS muzzle velocity. This combination falls under Ballistic Group “F”. After setting the rangefinder to ballistic group “F”, go to the range and sight in your riflescope at 100 yards. If you then take a shot at a target at 317 yds, the bullet drop will be 9 inches. If the shot is at angle of 27 degrees upward, then the corrected bullet drop will be 8 inches.
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.
If Bullet Drop is: | @300 yds | @300 m | @500 yds | @500 m |
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A | ||||
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F | ||||
G | ||||
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H | Less than 8 inches | Less than 20 cm | Less than 39 inches | Less than 99 cm |
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20 | 21 |