Sellier & Bellot Rifle Line .303 British 150 Grain Soft Point (MPN: SB303B)
Hunters taking vintage Lee-Enfield rifles or classic commercial sporters into the field for medium-to-large game need a .303 British cartridge that pairs reliable expansion with lighter felt recoil and a flatter trajectory. Sellier & Bellot engineered their Rifle Line 150-grain Soft Point (SP) ammunition specifically to deliver dependable knock-down performance on whitetail deer, mule deer, and black bear. Built to address the trajectory drop and delayed expansion of traditional military surplus FMJ loads, this sporting round provides classic rifle enthusiasts with rapid mushrooming and massive energy transfer downrange.
Produced under strict CIP commercial quality standards in Europe, each cartridge features a precision-formed 150-grain lead-core soft point projectile with an exposed lead tip. The gilding metal jacket is engineered with a tapered wall structure, initiating immediate expansion upon impact while maintaining sufficient jacket integrity for deep penetration into vital organ zones. S&B seats these hunting projectiles into factory-new, heavy-walled brass cases charged with clean-burning propellants and non-corrosive boxer primers, ensuring reliable ignition in damp or sub-zero hunting conditions.
In the field, expect flat medium-range trajectories and quick target recovery out of Lee-Enfield turn-bolt actions and sporting sporters. Pushing a muzzle velocity of approximately 2,600 FPS, this 150-grain load offers a flatter flight path than heavier 180-grain options while delivering plenty of kinetic force on impact. The smooth-rimmed, high-tensile brass case provides positive extractor engagement and snag-free ejection, giving hunters an effective, field-proven hunting load that keeps classic rifles hunting ready.
Armorer Bench Notes & Technical Maintenance Guidance
Shipping Restrictions: Ammunition sales are strictly regulated. Check all state and local laws prior to ordering. Cannot ship to PO Boxes, APO/FPO addresses, or internationally. Must ship via ORM-D / Hazardous Ground transport.
Armorer Tip: The .303 British is a rimmed cartridge designed to head-space on the case rim rather than the shoulder. When loading stripper clips or detachable box magazines, always stagger-stack cartridges so each round's rim is seated directly in front of the rim below it to prevent rim-lock during rapid bolt cycling. Additionally, inspect vintage firing pin protrusion and chamber condition prior to hunting to ensure reliable primer strikes and clean extraction.
Key Features
- Controlled Terminal Expansion: Exposed lead soft-point design mushrooms reliably for maximum tissue disruption on deer-sized game.
- Flatter Hunting Trajectory: 150-grain payload provides higher muzzle velocity (~2,600 FPS) and a flatter point-of-impact out to medium ranges.
- 100% Non-Corrosive Ignition: Modern boxer primers eliminate the risk of barrel pitting and chamber corrosion common with surplus loads.
- Reloadable European Brass: Premium, new-manufacture drawn-brass cases with consistent rim thickness for long reloading lifecycles.
- CIP Quality Certified: Manufactured under tight European commercial guidelines for consistent pressure curves and bullet seating.
Product Specifications
- Brand: Sellier & Bellot (S&B)
- Product Line: Rifle Line Ammunition
- MPN: SB303B
- UPC: 754908510368
- Caliber / Gauge: .303 British (.303 Brit / 7.7x56mmR)
- Bullet Weight: 150 Grain
- Bullet Type: Soft Point (SP / Cutting Edge)
- Muzzle Velocity: ~2,600 FPS
- Muzzle Energy: ~2,251 ft-lbs
- Casing Material: Brass (Reloadable)
- Primer Type: Boxer (Non-Corrosive)
- Box Quantity: 20 Rounds per Box
- Case Quantity: 500 Rounds (25 Boxes)
