Vital-Shok matches the world's finest big-game bullets with world-class copper, select powders, and legendary primers, resulting in top-notch Federal Premium ammunition you can truly rely on. Tipped bullet cavities offer consistent expansion across a broad range of velocities for devastating downrange performance. Grooved shanks increase accuracy in a wider range of firearms. Polymer tips and boattails increase ballistic coefficient for higher velocity, energy and less drop. The copper-alloy design achieves up to 99% weight retention even after deep, aggressive penetration and expansion. Nickel-plated cases prevent corrosion and aid in easier, faster extraction. Box of 20 rounds. Made in the USA.