The .338 Winchester Magnum has earned its reputation as a versatile big-game cartridge, equally at home in the mountains or on the plains. These default settings showcase its capabilities: a 225-grain bullet with a .435 ballistic coefficient moving at 2,780 fps. With a 100-yard zero, this combination delivers the kind of downrange energy and accuracy that has made it a favorite among serious hunters pursuing everything from deer to elk to moose.

While these baseline numbers demonstrate the cartridge's potential, real-world conditions can vary significantly. Our calculator lets you account for all the variables that matter in the field. Whether you're hunting at high elevation where the air is thin, dealing with tricky crosswinds, or taking angled shots in steep terrain, you can input your specific environmental conditions to get accurate ballistic data.

The trajectory chart and table below provide a detailed look at this round's performance out to 500 yards, with data points every 25 yards. Want to see how your particular load performs in your hunting conditions? Simply click the Modify Calculation button and enter your specific data. From atmospheric conditions to wind speed and shooting angle, you can dial in every variable that affects your bullet's path to the target.