Barnes Triple-Shock X-Bullets are sold for various calibers and in several diameters each being revolutionary and made from 100 percent copper. These bullets are designed to expand upon impact producing four razor sharp petals with deep cutting capability. For hunters who want to ensure a one-shot kill the bullets penetrate dense bone and tissue. In addition the bullets are designed to retain 100 percent of the original weight. The manufacturer states the best accuracy is found when seating from 0.03 to 0.07 inches based on the rifle being used. These live bullets are ready to take down big game.