Years of research and testing by the Hornady® Ballistic Development Group, combined with advanced manufacturing processes and quality control measures have led to the creation of the ultimate low drag, high performance match bullet. Use of a new A‑Tip® seating stem is required for optimal bullet seating. Specifications •Caliber: 6mm .243 •Product Line: A-Tip Match •Sectional Density: .266 •Ballistic Coefficient: .604 (G1) & .304(G7) •Twist Rate: 1:7.7"" (Minimum Recommended) •Weight: 110 Gr •App