The Sellier & Bellot 7×57 Mauser 158 Grain HPC rifle ammunition is engineered for medium-to-large game hunting. Featuring a rimless centre-fire brass case and a 158 gr (10.20 g) Hollow Point Capped projectile, this load is designed to deliver reliable magazine feeding, controlled expansion, and deep straight-line penetration through heavy muscle and bone. Tested from a 23.5-inch (600 mm) barrel, the cartridge generates a muzzle velocity of 2,484 fps (757 m/s) and a muzzle energy of 2,164 ft·lb (2,923 J), maintaining 1,322 ft·lb of kinetic energy at 400 yards.

Key Features

• HPC Projectile Architecture: Built with an open hollow cavity protected by a copper tip cap that prevents tip deformation inside magazine boxes, ensures uniform feeding, and drives rapid front-end mushrooming upon impact.
• Heavy Bone Penetration: The 158 gr bullet mass paired with a high 0.280 lb/in² sectional density ensures deep terminal penetration on tough game animals.
• Aerodynamic Profile: Delivers ballistic coefficients of G1 0.607 and G7 0.305, producing a flat trajectory with a 4.4-inch drop at 200 yards and a 15.9-inch drop at 300 yards when zeroed at 100 yards.
• Bimetal Construction: Utilises an Fe/CuZn 10 tombac-plated steel jacket to maintain structural integrity across high-resistance impacts.

Specifications

• Calibre: 7×57mm Mauser (rimless)
• Manufacturer SKU: V330922
• Bullet Weight: 158 gr (10.20 g)
• Bullet Type: HPC (Hollow Point Capped)
• Bullet Diameter: 0.284 in (7.21 mm)
• Sectional Density: 0.280 lb/in²
• Ballistic Coefficients: G1 = 0.607 | G7 = 0.305
• Cartridge Overall Length (OAL): 3.071 in (78.00 mm)
• Muzzle Velocity: 2,484 fps (757 m/s)
• Muzzle Energy: 2,164 ft·lb (2,923 J)
• Downrange Velocity: 2,341 fps (100 yds), 2,203 fps (200 yds), 2,070 fps (300 yds), 1,942 fps (400 yds)
• Downrange Energy: 1,922 ft·lb (100 yds), 1,702 ft·lb (200 yds), 1,503 ft·lb (300 yds), 1,322 ft·lb (400 yds)
• Packaging: 20 rounds per box

Who is the Sellier & Bellot 7x57 Mauser 158 Grain HPC Ammo 20 Rd for?

• Deer hunters targeting fallow, red, and sambar deer — relies on a high 0.280 lb/in² sectional density and 2,164 ft·lb of muzzle energy from this 7x57mm Mauser cartridge to drive straight wound channels and expand reliably through large deer vitals.
• Invasive animal controllers culling feral pigs and goats — utilises the 158 gr copper-capped hollow point at 2,484 fps muzzle velocity to punch through thick gristle plates and shoulder bones without deforming prior to impact.

Less suitable for: Break-action combination guns and drillings requiring rimmed ammunition (requires the rimmed 7x57R variant rather than this rimless Mauser design), small vermin such as rabbits and foxes (where lightweight, rapid-fragmenting varmint rounds prevent excessive meat and pelt destruction), or dangerous game larger than scrub bulls and camels (which demands heavy magnum-calibre ammunition exceeding this round's 2,164 ft·lb energy envelope).