Remington Ammunition 28335 257Roberts 117gr Core-Lokt Soft Point 20 Per Box/10 CaseSince 1939, more hunters have relied on Remington Core Lokt than any other big game ammunition, and rightly so. It's filled more tags on more continents than any other load. Core Lokt is the original controlled expansion bullet. Its time proven performance has made it hunting's first choice for over 75 years. The tapered copper jacket is locked to a solid lead core delivering massive 2X expansion, weight retention and consistent on game results.