7.62x39 .310 Diameter 123 Grain Ballistic Tip 50 Count By Nosler ITEM DESCRIPTION offers the Nosler 7.62x39 .310 Diameter 123 Grain Ballistic Tip 50 Count. These bullets will move at a high velocity and expand instantly upon impact. Specifications & Features: Nosler Ballistic Tip Fully-Tapered Jacket And Special Lead Alloy Core Heavy Jacketed Base Ballistically Engineered Solid Base Section Density: .183 Ballistic Coefficient: TBD