Sellier & Bellot 7x57 140 Grain Full Metal Jacket Rifle Ammo 20 Rounds. Also a excellent home defense round. Specifications for Sellier & Bellot 7x57 140 Grain Full Metal Jacket Rifle Ammunition: Manufacturer: Sellier & Bellot Caliber: 7x57mm Mauser Number of Rounds: 20 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 140 grain Cartridge Case Material: Brass Muzzle Velocity: 2621 ft/s Muzzle Energy: 2136 ft-lbs Application: Competition Match Package Type: Box Primer Style: Centerfire Sectional Density: 0.248 G1 Ballistic Coefficient: 0.429 G7 Ballistic Coefficient: 0.214 Package Contents: Sellier & Bellot 7x57 140 Grain Full Metal Jacket Rifle Ammunition What is Sellier & Bellot 7x57 140 Grain Full Metal Jacket Rifle Ammunition good for? The manufacturer thinks that it is best for match competition.Sellier & Bellot SB757A: 7x57 140 Grain Full Metal Jacket Rifle Ammo 20 Rounds