.257 Weatherby Magnum Trajectory Calculator

The .257 Weatherby Magnum stands as one of the most impressive flat-shooting cartridges ever created, pushing a 90-grain bullet to a blistering 3,625 fps that delivers devastatingly flat trajectory and tremendous downrange energy. This powerhouse cartridge represents the pinnacle of .25 caliber performance, making it a favorite among serious long-range hunters who demand maximum velocity and minimal bullet drop. The trajectory chart and table below demonstrate the bullet's flight path using a 100-yard zero, showcasing how the .257 Weatherby's exceptional velocity creates an almost laser-flat trajectory that extends effective range well beyond most other hunting cartridges.

These standard calculations use a G1 ballistic coefficient of 0.273 under calm conditions, though your specific loads may vary based on bullet selection and powder charges. The .257 Weatherby Magnum responds well to careful load development, often producing excellent accuracy with the right components. To customize these trajectory calculations for your particular rifle and ammunition combination, click "Modify Calculation" below where you can input your chronographed velocity, account for wind speed and direction, adjust for uphill or downhill shooting angles, and enter atmospheric data including altitude, barometric pressure, temperature, and humidity for maximum precision.

What makes the .257 Weatherby Magnum truly special is its ability to deliver big game performance with a trajectory so flat you can almost point and shoot out to remarkable distances. Whether you're hunting antelope across wide open country or taking long shots at deer and elk, this cartridge's combination of speed, energy, and flat trajectory gives you a significant advantage. Having accurate trajectory data matched to your specific setup ensures you can take full advantage of this cartridge's incredible long-range capabilities while maintaining the confidence needed for clean, ethical shots at extended distances.