Sellier & Bellot 303 British 150 Grain Soft Point Rifle Ammo 20 Rounds. A lead core with a precisely engineered jacket results from its controlled expansion and high weight retention. Specifications for Sellier & Bellot 303 British 150 Grain Soft Point Rifle Ammunition: Manufacturer: Sellier & Bellot Caliber: .303 British Number of Rounds: 20 Bullet Type: Soft Point (SP) Bullet Weight: 150 grain Cartridge Case Material: Brass Muzzle Velocity: 2654 ft/s Muzzle Energy: 2346 ft-lbs Application: Hunting Package Type: Box Primer Style: Centerfire Sectional Density: 0.222 G1 Ballistic Coefficient: 0.309 G7 Ballistic Coefficient: 0.156 Package Contents: Sellier & Bellot 303 British 150 Grain Soft Point Rifle Ammunition What is Sellier & Bellot 303 British 150 Grain Soft Point Rifle Ammunition good for? The manufacturer says that it is good for hunting.Sellier & Bellot SB303B: 303 British 150 Grain Soft Point Rifle Ammo 20 Rounds