Federal Premium Safari Cape-Shok 416 Rigby 400gr Swift A-Frame Centerfire Rifle Ammo - 20 Rounds - Those who hunt game that hunts back trust their lives to Federal Premium Swift A-Frame loads. The bonded front core and progressively tapered jacket produce controlled expansion and energy release. The design stops expansion at its optimum point and maintains a longer shank for deep penetration. Bonded front core and progressively tapered jacket for controlled expansion and energy release A-Frame design stops expansion and maintains a longer shank for deep penetration and high weight retention Nose profile withstands heavy recoil without deforming Reliable primers and propellants