Remington Core-Lokt Features The Remington Core-Lokt drives a 250 grain pointed soft point bullet at a muzzle velocity of 2860 fps giving hunters the flat trajectory and downrange energy needed for big game at extended distances. A ballistic coefficient of 0.431 reflects strong aerodynamic efficiency helping the bullet retain velocity and energy as range increases. The tapered copper jacket locks to a solid lead core controlling expansion for reliable penetration on tough heavy-boned game. For big game hunters who need controlled expansion and deep penetration the Remington Core-Lokt s tapered jacket and locked core deliver that proven performance shot after shot. Since 1939 more hunters have relied on Core-Lokt than any other big game ammunition a legacy built on consistent terminal performance across generations of hunters. The .338 Rem Ultra Mag chambering pairs a heavy 250 grain bullet with genuine magnum velocity giving hunters the authority needed for the largest North American game. Each 20-round box gives hunters enough supply to properly sight in a magnum rifle and still head afield with rounds to spare. For big game hunters who want a proven time-tested load in a serious magnum chambering the Core-Lokt in .338 Rem Ultra Mag is a dependable choice for sale at GrabAGun. Remington Core-Lokt Specifications Manufacturer: Remington Model: Core-Lokt Caliber: .338 Rem Ultra Mag Bullet Weight: 250 gr Bullet Type: Pointed Soft Point Core-Lokt Muzzle Velocity: 2860 fps Ballistic Coefficient: 0.431 Rounds Per Box: 20 Game Type: Big Game Available At: GrabAGun