Federal 6.5x55mm Swedish Mauser 156gr Fusion SP Rifle Ammo - 20 Rounds - Fusion was the first rifle ammunition specifically built for deer hunting-and it's still the best, offering the largest expansion and highest weight retention in head-to-head comparisons against the competition. With a molecularly fused jacket and a pressure-formed core, Fusion transfers maximum energy on target. Copper Jacket Is Electro-Chemically Applied To The Core, Resulting In A Perfectly Uniform Jacket; Excellent Accuracy; Skived, Pre-Programmed Nose Provides Consistent Expansion; Maximum Weight Retention For Deep Penetration;