Winchester Ballistic Silvertip 223 WSSM 55gr Polymer Tip 20 Rnds♦ Polymer Tip ♦ Alloyed Lead Core ♦ Contoured Jacket ♦ Lubalox (Black Oxide) Coating ♦ Rapid Controlled Expansion Rapid controlled expansion, Massive knockdown, moderate penetration.•Caliber : 223 Winchester Super Short Magnum•Bullet Weight : 55 Grain •Bullet Type : Ballistic Silvertip •Muzzle Velocity : 3850 fps •Casing Material : Nickel-Plated Brass•Rounds Per Box : 20 •Rounds Per Case : 200