The core-lokt bullet design is the original controlled since 1939, more hunters have relied on remington core-lokt than any other big game ammunition.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.Trust your next hunt to the best-selling hunting ammunition of all time.Specifications:280 rem 150 gr 2890 fps pointed soft point core-lokt (pspcl) 20 bx/10 csCaliber: 280 RemBullet Type: Pointed Soft Point Core LoktBullet Weight: 150 grMuzzle Energy: 2782 ft lbsMuzzle Velocity: 2890 fpsRounds Per Box: 20Boxes Per Case: 10Application: HuntingCasing Material: BrassHazair: Yes