Ballistics calculator
Trajectory, energy and wind drift for factory or custom loads; compare up to 4. The link is shareable.
Selected loads
- Norma Oryx .243 Winchester 6.5 g
Setup and conditions
Air pressure is derived from altitude (ICAO standard atmosphere).
Optimal zero
- Norma Oryx .243 Winchester 6.5 g:Optimal zero (±4 cm): 174 m, no holdover needed out to 200 m.
Norma Oryx .243 Winchester 6.5 gv0 910 m/s · BC G1 0.261
| Range | Velocity | Energy | Path (cm) | MRAD | Wind drift (cm) | MRAD | Time |
|---|---|---|---|---|---|---|---|
| 0 m | 910 m/s | 2,691 J | -4.0 | 0.00 | 0.0 | 0.00 | 0.000 s |
| 25 m | 879 m/s | 2,510 J | -1.8 | -0.70 | 0.0 | 0.00 | 0.028 s |
| 50 m | 848 m/s | 2,340 J | -0.3 | -0.06 | 0.0 | 0.00 | 0.057 s |
| 75 m | 819 m/s | 2,179 J | 0.3 | 0.04 | 0.0 | 0.00 | 0.087 s |
| 100 m | 790 m/s | 2,027 J | 0.0 | 0.00 | 0.0 | 0.00 | 0.118 s |
| 125 m | 761 m/s | 1,883 J | -1.3 | -0.10 | 0.0 | 0.00 | 0.150 s |
| 150 m | 733 m/s | 1,748 J | -3.6 | -0.24 | 0.0 | 0.00 | 0.184 s |
| 175 m | 706 m/s | 1,620 J | -7.1 | -0.41 | 0.0 | 0.00 | 0.218 s |
| 200 m | 679 m/s | 1,500 J | -11.9 | -0.59 | 0.0 | 0.00 | 0.255 s |
| 225 m | 653 m/s | 1,387 J | -17.9 | -0.80 | 0.0 | 0.00 | 0.292 s |
| 250 m | 628 m/s | 1,280 J | -25.4 | -1.02 | 0.0 | 0.00 | 0.331 s |
| 275 m | 603 m/s | 1,180 J | -34.4 | -1.25 | 0.0 | 0.00 | 0.372 s |
| 300 m | 578 m/s | 1,087 J | -45.2 | -1.51 | 0.0 | 0.00 | 0.414 s |
Point-mass model with G1/G7 tables; real trajectories vary by rifle. Always zero and verify before hunting.