Nosler's Combined Technology Ballistic Silvertip bullet takes Nosler's Ballistic Tip technology for accuracy, penetration and controlled expansion and combines it with Winchester's Lubalox black oxide coating process to make every shot you fire easier on your barrel. Series Hunting Weight 168 gr Quantity 50 Per Box Cannelure No Bullet Type Spitzer Point Core Material Lead Bullet Caliber 30 Caliber Bullet Coating Lubalox Bullet Diameter .308 Jacket Material Copper Unit Of Measure box Recommended Usage Hunting Sectional Density .253 Bullet Tip Material Polymer