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Ballistic Drop—Trajectory tables with real-time weather correction

Ballistic Drop Calculator

Caliber

Bullet

Zero (yd)

Altitude

MV: 3,240 fpsG1 BC: 0.243Wind: 10 mph crosswind

Bullet Drop

100 yd

ZERO90.3" drift

200 yd

-47.4"74" drift

300 yd

-47.4"57.7" drift

400 yd

-47.4"41.4" drift

500 yd

-47.4"25.1" drift

600 yd

-47.4"8.8" drift

DOPE Card — .223 Rem / 5.56 NATO 55gr FMJ (M193)

Range	Drop	Drift	Velocity	Energy	TOF
100 yd	Zero	90.3"	100 fps	1 ft-lbs	0.606s
200 yd	-47.4"	74"	100 fps	1 ft-lbs	0.606s
300 yd	-47.4"	57.7"	100 fps	1 ft-lbs	0.606s
400 yd	-47.4"	41.4"	100 fps	1 ft-lbs	0.606s
500 yd	-47.4"	25.1"	100 fps	1 ft-lbs	0.606s
600 yd	-47.4"	8.8"	100 fps	1 ft-lbs	0.606s

Conditions

Crosswind (mph)

Temperature59 F (std)

Pressure29.92 inHg

Humidity50%

Altitude5,000 ft (Boise)

Standard atmosphere defaults. Altitude affects air density and thus drag — bullets shoot flatter at higher elevations. Boise sits at ~2,700 ft.

DOPE Notes

A 100-yd zero puts most rifle calibers ~1.5" high at 50 yd and roughly on at 200 yd (the military "battle zero" concept).

Wind drift grows exponentially. A 10 mph wind at 600 yd moves a .308 168gr SMK roughly 40+ inches.

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