Remington 7MM Rem Mag 150GR Psp Core LoktSince 1939, more hunters have relied on Remington Core Lokt than any other big game ammunition, and rightfully so. It has claimed more game on more continents than any other load. Core Lokt is the original controlled expansion bullet. Its time proven performance has made it huntings first choice for over 80 years. The tapered copper jacket is locked to a solid lead core delivering massive 2X expansion, high weight retention and consistent on game