Remington Core-Lokt 300 WSM (Winchester Short Mag) 150gr Full Metal Jacket Tipped Centerfire Rifle Ammo - 20 Rounds - Big game meet bigger game. New for the hunting season, this is Core-Locked tipped. Offering proven on-game performance with improved accuracy and long range potential, it's fair to say the legend just became more legendary. Thousands of rounds in development, Core-locked tipped combines truer flight, flatter trajectory and devastating terminal energy.