.45-70 Government Trajectory Calculator
The .45-70 Government brings classic big-bore performance to modern shooters. This trajectory plot follows a hefty 325-grain bullet at 2,050 fps with a 100-yard zero. Despite its heritage dating back to 1873, this powerful cartridge remains a favorite for big game hunting and lever-action enthusiasts.
Click "Modify Calculation" below to customize the trajectory for your specific load. Whether you're using traditional factory loads or modern high-pressure ammunition designed for stronger actions, you can input your exact specifications and environmental conditions to get precise trajectory data.
Understanding this cartridge's significant arc is crucial for accurate shot placement, whether you're hunting large game or enjoying cowboy action shooting. The .45-70's rainbow trajectory requires careful attention to holdover, making this calculator particularly valuable.
.45-70 Government Trajectory Chart
.45-70 Government Ballistics Data
| Range (yd) | Elevation (in) | Elevation (MOA) | Elevation (MIL) | Windage (in) | Windage (MOA) | Windage (MIL) | Time (s) | Velocity (fps) | Energy (ft-lbs) |
|---|---|---|---|---|---|---|---|---|---|
| 0 | -1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2050.0 | 3033.52 |
| 25 | -0.22 | 0.85 | 0.247 | 0.0 | 0.0 | 0.0 | 0.038 | 1967.57 | 2794.48 |
| 50 | 0.48 | -0.92 | -0.266 | 0.0 | 0.0 | 0.0 | 0.077 | 1887.76 | 2572.36 |
| 75 | 0.58 | -0.73 | -0.213 | 0.0 | 0.0 | 0.0 | 0.117 | 1810.08 | 2365.02 |
| 100 | 0.01 | -0.01 | -0.002 | 0.0 | 0.0 | 0.0 | 0.16 | 1734.69 | 2172.13 |
| 125 | -1.28 | 0.98 | 0.285 | 0.0 | 0.0 | 0.0 | 0.204 | 1661.81 | 1993.43 |
| 150 | -3.36 | 2.14 | 0.622 | 0.0 | 0.0 | 0.0 | 0.25 | 1591.54 | 1828.41 |
| 175 | -6.3 | 3.43 | 0.998 | 0.0 | 0.0 | 0.0 | 0.298 | 1523.97 | 1676.46 |
| 200 | -10.17 | 4.85 | 1.411 | 0.0 | 0.0 | 0.0 | 0.348 | 1459.25 | 1537.09 |
| 225 | -15.06 | 6.39 | 1.858 | 0.0 | 0.0 | 0.0 | 0.401 | 1397.64 | 1410.04 |
| 250 | -21.06 | 8.04 | 2.339 | 0.0 | 0.0 | 0.0 | 0.456 | 1339.48 | 1295.12 |
| 275 | -28.27 | 9.81 | 2.855 | 0.0 | 0.0 | 0.0 | 0.513 | 1285.12 | 1192.13 |
| 300 | -36.8 | 11.71 | 3.406 | 0.0 | 0.0 | 0.0 | 0.573 | 1234.89 | 1100.78 |
| 325 | -46.76 | 13.73 | 3.995 | 0.0 | 0.0 | 0.0 | 0.634 | 1189.07 | 1020.6 |
| 350 | -58.24 | 15.89 | 4.621 | 0.0 | 0.0 | 0.0 | 0.699 | 1147.87 | 951.1 |
| 375 | -71.38 | 18.17 | 5.286 | 0.0 | 0.0 | 0.0 | 0.765 | 1111.28 | 891.42 |
| 400 | -86.28 | 20.59 | 5.99 | 0.0 | 0.0 | 0.0 | 0.834 | 1078.84 | 840.14 |
| 425 | -103.04 | 23.15 | 6.733 | 0.0 | 0.0 | 0.0 | 0.904 | 1050.01 | 795.84 |
| 450 | -121.76 | 25.83 | 7.515 | 0.0 | 0.0 | 0.0 | 0.976 | 1024.21 | 757.21 |
| 475 | -142.56 | 28.65 | 8.335 | 0.0 | 0.0 | 0.0 | 1.051 | 1000.92 | 723.17 |
| 500 | -165.53 | 31.61 | 9.194 | 0.0 | 0.0 | 0.0 | 1.126 | 979.68 | 692.81 |