Sierra Bullets BlitzKing Rifle Bullets .20 Caliber Flat Base FB 32 grain 500 Bullets/Box. The tips of these bullets are made of a proprietary compound and the jackets are thin for enhanced accuracy and explosive expansion. The lighter bullets in 20 & 22 calibers are designed to be fired at muzzle velocities up to 4400 fps. The lightest 6mm BlitzKing bullet can be fired at muzzle velocities up to 4000 fps. The market name is BlitzKing. This bullet is not available with Moly-Coating. The #1032 was introduced in 2005. Ballistic Coefficients and Velocity Ranges .221 at 3950 fps and above .218 between 3625 and 3950 fps .204 between 3300 and 3625 fps .189 between 2225 and 3300 fps .179 between 1750 and 2225 fps Specifications for Sierra Bullets BlitzKing 32 gr. .20 Cal FB Rifle Bullets 500 Count: Manufacturer: Sierra Bullets Gun Type: Rifle Bullet Type: Flat Base (FB) Bullet Weight: 32 grain Projectile Caliber: .20 Caliber Diameter: 0.204 in Sectional Density: 0.11 Bullet Quantity: 500 Bullet Country of Origin: USA Package Contents: Sierra Bullets BlitzKing 32 gr. .20 Cal FB Rifle Bullets 500 Count Sierra Bullets 1032C: BlitzKing Rifle Bullets .20 Caliber Flat Base FB 32 grain 500 Bullets/Box