Winchester White Box centerfire rifle ammunition is backed by generations of excellence. Made in the USA, this high-quality ammunition combines performance and value that meets a wide variety of hunter's and shooter's needs. Ammunition is chambered in .223 Remington, loaded with a 55 grain full metal jacket projectile, and is packaged 150 rounds per box. DETAILS Product Family: USA White Box Caliber: .223 Remington Bullet Type: Full Metal Jacket Bullet Weight: 55 Grain Rounds per Box: 150 Rounds