.257 Weatherby Magnum Trajectory Calculator
The .257 Weatherby Magnum is the flattest-shooting production cartridge in its class, built for long-range hunting. With a 90-grain bullet at 3,625 fps and a 100-yard zero, expect about 1.8 inches of drop at 200 yards, 4.3 inches at 250 yards, and 7.9 inches at 300 yards. The high velocity and flat trajectory make it deadly on antelope and deer at extended ranges.
Use the calculator to match your specific load. Click "Modify Calculation" to enter your bullet weight, muzzle velocity, and ballistic coefficient. The .257 Weatherby runs 87 to 120 grain bullets. Lighter bullets maximize velocity while 115-120 grain options provide better penetration on larger game. You can also factor in wind, shooting angle, and atmospheric conditions.
.257 Weatherby Magnum Trajectory Chart
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.257 Weatherby Magnum 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 | 3625.0 | 2626.72 |
| 25 | -0.85 | 3.22 | 0.935 | 0.0 | 0.0 | 0.0 | 0.021 | 3522.11 | 2479.73 |
| 50 | -0.37 | 0.71 | 0.207 | 0.0 | 0.0 | 0.0 | 0.043 | 3422.44 | 2341.36 |
| 75 | -0.09 | 0.11 | 0.032 | 0.0 | 0.0 | 0.0 | 0.065 | 3325.14 | 2210.13 |
| 100 | 0.0 | -0.0 | -0.001 | 0.0 | 0.0 | 0.0 | 0.088 | 3230.12 | 2085.63 |
| 125 | -0.11 | 0.09 | 0.025 | 0.0 | 0.0 | 0.0 | 0.112 | 3137.23 | 1967.4 |
| 150 | -0.45 | 0.29 | 0.084 | 0.0 | 0.0 | 0.0 | 0.136 | 3046.4 | 1855.12 |
| 175 | -1.02 | 0.56 | 0.162 | 0.0 | 0.0 | 0.0 | 0.161 | 2957.49 | 1748.42 |
| 200 | -1.85 | 0.88 | 0.256 | 0.0 | 0.0 | 0.0 | 0.187 | 2870.41 | 1646.97 |
| 225 | -2.93 | 1.24 | 0.361 | 0.0 | 0.0 | 0.0 | 0.213 | 2785.07 | 1550.49 |
| 250 | -4.29 | 1.64 | 0.477 | 0.0 | 0.0 | 0.0 | 0.24 | 2701.34 | 1458.67 |
| 275 | -5.96 | 2.07 | 0.601 | 0.0 | 0.0 | 0.0 | 0.269 | 2619.17 | 1371.28 |
| 300 | -7.93 | 2.52 | 0.734 | 0.0 | 0.0 | 0.0 | 0.298 | 2538.47 | 1288.08 |
| 325 | -10.25 | 3.01 | 0.876 | 0.0 | 0.0 | 0.0 | 0.328 | 2459.21 | 1208.9 |
| 350 | -12.92 | 3.53 | 1.025 | 0.0 | 0.0 | 0.0 | 0.359 | 2381.3 | 1133.51 |
| 375 | -15.98 | 4.07 | 1.184 | 0.0 | 0.0 | 0.0 | 0.391 | 2304.77 | 1061.83 |
| 400 | -19.45 | 4.64 | 1.35 | 0.0 | 0.0 | 0.0 | 0.424 | 2229.62 | 993.71 |
| 425 | -23.35 | 5.25 | 1.526 | 0.0 | 0.0 | 0.0 | 0.458 | 2155.8 | 929.0 |
| 450 | -27.73 | 5.88 | 1.711 | 0.0 | 0.0 | 0.0 | 0.493 | 2083.4 | 867.65 |
| 475 | -32.6 | 6.55 | 1.906 | 0.0 | 0.0 | 0.0 | 0.53 | 2012.42 | 809.54 |
| 500 | -38.01 | 7.26 | 2.111 | 0.0 | 0.0 | 0.0 | 0.568 | 1942.91 | 754.58 |