In general, 6.5 mm (.264") bullets are known for their relatively-high sectional density and ballistic coefficients and see success in rifle competition. The 6.5mm Creedmoor was designed for target shooting at longer ranges and as such, couples a sensible case volume (3.40 ml) to bore area (34.66 mm2/0.3466 cm2) ratio with ample space for loading relatively-long slender projectiles providing good aerodynamic efficiency and external ballistic performance for the projectile diameter.
