The Sellier & Bellot 7×57 R HPC (Hollow Point Capped) 158 Grain Ammunition delivers controlled expansion and deep terminal penetration for break-action hunting platforms. Featuring an expanding lead-core projectile fitted with an aerodynamic copper cap, this factory load protects the hollow-point cavity from tip damage while ensuring consistent aerodynamic flight and immediate initial expansion upon impact. Built with non-corrosive Boxer primers and reloadable brass cases, this 20-round factory box is specifically engineered for European-style single-shot and combination firearms chambered in rimmed 7×57 R.

Key Features

• Hollow Point Capped (HPC) Projectile: Combines a deep hollow-point cavity with an aerodynamic copper cap to promote rapid frontal mushrooming while preserving retained mass for heavy tissue penetration.
• High Sectional Density: The 158-grain bullet features a sectional density of 0.280 lb/in², providing the straight-line penetration required for heavy game.
• Aerodynamic Efficiency: Produces a G1 ballistic coefficient of 0.607 (G7: 0.305) to maintain flight stability and downrange velocity across standard hunting distances.
• Break-Action Reliability: Sized and rimmed strictly to 7×57 R dimensions for positive extraction in extractors and ejectors on break-action mechanisms.
• Reloadable Components: Assembled in factory-fresh, Boxer-primed brass cases with an overall cartridge length (OAL) of 3.071 inches (78.0 mm).

Specifications

• Calibre: 7×57 R (Rimmed Mauser / 7×57mmR)
• Manufacturer Part Number: V331022
• Bullet Type: HPC (Hollow Point Capped)
• Bullet Diameter: 0.284 in (7.25 mm)
• Bullet Weight: 158 grains (10.20 g)
• Muzzle Velocity: 757 m/s (approx. 2,484 fps from a 600 mm test barrel)
• Muzzle Energy: 2,923 J (approx. 2,156–2,164 ft·lb)
• Sectional Density: 0.280 lb/in²
• Ballistic Coefficients: G1: 0.607 / G7: 0.305
• Case Type: Reloadable brass, Boxer-primed
• Overall Cartridge Length (OAL): 3.071 in (78.0 mm)
• Box Capacity: 20 rounds

Who is the S&B Sellier & Bellot 7x57r Rimmed 158 Grain Hpc Ammo 20 Rd for?

• Break-Action Single-Shot and Combination Gun Hunters — Delivers positive mechanical extraction and headspacing in break-action Kipplauf rifles, Bockbüchsflinte combination guns, and drillings engineered specifically for the 7×57 R rimmed cartridge dimensions.
• Medium-to-Large Game Hunters — Leverages a 158-grain (10.20 g) projectile producing 2,923 J of muzzle energy and 757 m/s muzzle velocity, delivering the bone-breaking terminal penetration needed for sambar deer, red deer, fallow deer, and wild boar.

Less suitable for: Long-range shooting beyond its 250-to-300-metre hunting engagement envelope, rifles chambered in rimless 7×57mm Mauser or other rimmed calibres like 7×65 R, or small-game and varmint control where lighter 120-to-140-grain rapid-expanding soft-point or ballistic-tip ammunition is required.