This is .300 Win. Remington 150gr. Core-Lokt Pointed Soft Point Ammo. The bullet in this ammo has a Spitzer shape profile for improved velocity and flatter trajectory. The Bullet core is mechanically locked in place to provide deep penetration and the jackets are designed to give you progressive, reliable expansion everytime. The expansion will be almost twice the original diameter of the bullet. This ammo is brass cased, boxer primed, non-magnetic and non-corrosive. This ammo comes packed in 20 round boxes.