Berger FB Target .22 Caliber 55 Grain Flat Base Rifle Bullets 100 Bullet. Flat Base Target Bullets are often used out to mid-range distances of 300 yards or more where a boat tail is not applicable. Berger Flat Base Target bullets are match-grade quality and utilize a tangent ogive bullet design which makes these very easy to load tune and shoot. Highly accurate the Flat Base Target uses J4 Precision bullet jackets for construction. J4 Precision Jackets have a Total Indicated Runout (TIR) of +/- .0001 and extremely tight manufacturing tolerances. Specifications for Berger Target .22 Caliber .224 55 Grain Flat Base 100 Bullets: Manufacturer: Berger Gun Type: Rifle Bullet Type: Flat Base (FB) Bullet Weight: 55 grain Projectile Caliber: .22 Caliber Diameter: 0.224 mm G1 Ballistic Coefficient: 0.254 Sectional Density: 0.157 Jacket Material: J4 Target Jacket Bullet Quantity: 100 Bullet Country of Origin: USA Fabric/Material: Copper Features of Berger 22410 Target 22 Caliber .224 55 GR Flat Base 100 Box Caliber-22 Caliber Bullet Weight-55 Grain Product Line-FB Target G1 BC-0.254 Minimum Twist (or faster)-1:14" Ogive Style-Tangent Base Style-Flat Base Jacket-J4 Target Jacket Sectional Density-0.157 Bullet Dia.-0.224 OAL-0.749 Base to Ogive-0.328 Nose Length-0.509 Bearing Surface-0.24 Boat Tail Length-FB Package Contents: Berger 22410 Target 22 Caliber .224 55 GR Flat Base 100 Box Berger 22410: 22410 Target 22 Caliber .224 55 GR Flat Base 100 Box