Remington Core-Lokt 6mm Remington 100gr PSPCL Rifle Ammo - 20 Rounds - The Core-Lokt bullet design is the original controlled expansion bullet, and one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core, promoting perfectly controlled expansion and high weight retention for absolutely dependable on game results. You'll find its time proven performance in both soft point and pointed soft point versions, and in a range of bullet weights for virtually every centerfire hunting caliber made.