Ballistics by Cartridge

.45-70 Government Ballistics Chart

Drop, wind drift, velocity and energy for the loads .45-70 Government actually shoots — solved by a real trajectory engine, not copied from a box.

Muzzle velocity
1330 fps
Bullet
405 gr, G1 0.281
Drop at 300 yd
78.6" (7.3 MRAD)
Ballistics chart: drop, wind drift, velocity and energy by range (100 yard zero)
RangeDrop (in)MOAMRADWind 10 mph (in)Velocity (fps)Energy (ft-lb)TOF (s)
50 yd1.93.70 DOWN1.08 DOWN-0.7124313900.12
100 yd0.00.00 UP0.00 UP-2.8116812270.24
150 yd-8.35.29 UP1.54 UP-6.2110510990.37
200 yd-23.711.32 UP3.29 UP-10.8105410000.51
250 yd-46.917.93 UP5.22 UP-16.510129220.66
300 yd-78.625.03 UP7.28 UP-23.29768570.81
350 yd-119.532.59 UP9.48 UP-30.99458030.96
400 yd-170.040.59 UP11.81 UP-39.49177561.13
450 yd-230.949.00 UP14.25 UP-48.88917141.29
500 yd-302.757.82 UP16.82 UP-59.08686771.46

Solved at standard sea-level atmosphere (59°F, 29.92 inHg) with a 100 yard zero, 1.75" sight height and a 10 mph full-value crosswind. Drop is relative to your zero.

Quick answer

With a 100 yd zero, a 405 gr standard .45-70 Government load (405 gr, 1330 fps) drops 8.3" at 150 yd, 46.9" at 250 yd and 302.7" at 500 yd. Change the load or zero above to see your own numbers.

Keep your profiles and range cards on your phone

Atlas Ballistics for iPhone, iPad and Mac adds saved rifle and ammo profiles, offline range cards, and truing from your real shots.

Get Atlas for iPhone

Free to download. Your website inputs are not automatically imported into the app.

.45-70 Government trajectory

50100150200250300350400450500Range (yd)-315-210-1050105Drop (in)

The .45-70 trajectory is a rainbow — a 405 grain bullet at 1,330 fps drops nearly four feet by 250 yards from a 100 yard zero — but the payload arrives with authority at any range you can hold for.

Modern high-pressure loads flatten the curve dramatically. Pick the load row that matches what your rifle actually shoots before reading holds off the chart.

Ballistics charts for other cartridges

Frequently asked questions

With a 405 gr standard load at 1330 fps and a 100 yard zero, a .45-70 Government drops about 78.6 inches at 300 yards (25.0 MOA / 7.3 MRAD), and about 23.7 inches at 200 yards. The full chart above covers every range and load.

A typical 405 gr standard load leaves the muzzle at 1330 fps with 1591 ft-lbs of energy. At 300 yards it is still moving 976 fps and carrying 857 ft-lbs. These figures are solved from the load data, not copied from a box chart.

A steady 10 mph full-value crosswind pushes the 405 gr standard load about -23.2 inches at 300 yards. Wind drift grows faster than drop with distance, which is why wind reading matters more than memorizing holdover.

Your barrel length, actual muzzle velocity, and the day’s density altitude all shift the solution. These tables use standard sea-level atmosphere and published velocities. Chronograph your load, solve for your real conditions, and true the result against actual impacts — the Atlas Ballistics app does all three.

More free ballistic calculators

All free, all in the browser, no download needed.