Ballistic calculator

Your DOPE card, in metres and clicks

Enter your load, your scope and the conditions; get the elevation and wind dial-ups for every distance, ready to print and tape to the stock. A rifle zeroed at the coast doesn't shoot the same on the Highveld — at Johannesburg's ≈1 750 m the air is roughly 15–20% thinner than at sea level, so set your altitude. Free, no account, and it runs entirely in your browser.

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Bullet & load

Start fromGeneric example values — replace with your own bullet's published BC and your chronographed velocity.

Name on the card

Ballistic coefficient

Drag model

Bullet weight

11.3 g

Bullet diameter

7.82 mm

Muzzle velocity

Chronographed from your rifle beats the box figure.

Unit

Rifle & scope

Sight height

Bore centre to scope centre

Zero distance

Turret click value

Atmosphere

Temperature

°C

Humidity

Air pressure from

AltitudeStation pressure

Range altitude

Uses standard-day pressure for that altitude. A Kestrel or weather-app station pressure is more accurate.

Wind

Wind speed

Unit

Blowing from (12 o'clock = toward you from the target)

Table

Out to

Every

Density altitude

2 353 m

820 hPa · 0.971 kg/m³

Muzzle

790 m/s

3 539 J

Transonic from

> 800 m

Speed of sound 343 m/s

Sectional density

0.264

lb/in²

Bullet path vs. line of sight (cm)

DOPE table

Elevation = dial up from your zero. Wind = dial or hold into the wind.

Range m	Drop cm	Elev MOA	Clicks	Wind cm	Wind MOA	Clicks	m/s	J	ToF s
50	0.1	0.06 D	0	0.3	0.19 R	1	765	3 322	0.06
100	0.0	0.00	0	1.1	0.39 R	2	741	3 116	0.13
150	-4.6	1.04 U	4	2.6	0.59 R	2	718	2 920	0.20
200	-13.9	2.38 U	10	4.7	0.81 R	3	694	2 735	0.27
250	-28.3	3.89 U	16	7.4	1.02 R	4	672	2 558	0.34
300	-48.1	5.51 U	22	10.9	1.25 R	5	649	2 391	0.42
350	-73.8	7.25 U	29	15.1	1.48 R	6	628	2 233	0.50
400	-105.7	9.08 U	36	20.0	1.72 R	7	606	2 082	0.58
450	-144.2	11.02 U	44	25.8	1.97 R	8	585	1 940	0.66
500	-190.0	13.06 U	52	32.4	2.22 R	9	564	1 805	0.75
550	-243.4	15.21 U	61	39.8	2.49 R	10	544	1 677	0.84
600	-305.1	17.48 U	70	48.3	2.77 R	11	524	1 555	0.93
650	-375.8	19.88 U	80	57.7	3.05 R	12	504	1 440	1.03
700	-456.2	22.40 U	90	68.3	3.35 R	13	485	1 331	1.13
750	-546.9	25.07 U	100	79.9	3.66 R	15	465	1 228	1.24
800	-649.1	27.89 U	112	92.8	3.99 R	16	447	1 131	1.35

SizeTip: print, then cover it in clear tape before it meets the rain.

True your muzzle velocity from a real come-up

Fired at distance and needed a different dial-up than the table says? Enter the elevation that actually centred your group, and we'll solve for the muzzle velocity that explains it (BC held fixed). Use a supersonic distance, ideally 500 m or more, with a group of at least 3–5 shots.

Distance

Elevation that centred it

MOA up

Table says 17.48

Example .308 Win load

G7 0.243 · 175 gr · MV 790 m/s · zero 100 m · SH 40 mm · 0.250 MOA/click

20 °C · 820 hPa · DA 2 353 m · wind 10 km/h @ 3 o'clock

m	Elev MOA	Clk	Wind MOA	Clk	m/s	ToF
50	0.1D	0	0.2R	1	765	0.06
100	0.0	0	0.4R	2	741	0.13
150	1.0U	4	0.6R	2	718	0.20
200	2.4U	10	0.8R	3	694	0.27
250	3.9U	16	1.0R	4	672	0.34
300	5.5U	22	1.2R	5	649	0.42
350	7.2U	29	1.5R	6	628	0.50
400	9.1U	36	1.7R	7	606	0.58
450	11.0U	44	2.0R	8	585	0.66
500	13.1U	52	2.2R	9	564	0.75
550	15.2U	61	2.5R	10	544	0.84
600	17.5U	70	2.8R	11	524	0.93
650	19.9U	80	3.1R	12	504	1.03
700	22.4U	90	3.4R	13	485	1.13
750	25.1U	100	3.7R	15	465	1.24
800	27.9U	112	4.0R	16	447	1.35

* transonic/subsonic. Estimates only — verify on paper before relying on them. meanradius

These are model estimates (point-mass solver, standard G1/G7 drag tables). Spin drift, Coriolis, aerodynamic jump and incline aren't modelled. Always confirm your data on paper at the range before relying on it — on game or in a match.