The Sellier & Bellot .300 Winchester Magnum 180 Grain TXRG (eXergy Blue) is lead-free centrefire rifle ammunition engineered for medium to large game hunting. Built with a monolithic solid copper-alloy projectile and an aerodynamic blue polymer expansion tip, this ammunition delivers near-100% weight retention without fragmenting or leaving toxic lead residue in harvested meat. Fired from a 23.5-inch test barrel, the 180 gr bullet leaves the muzzle at 2,753 fps with 3,028 ft·lb of energy, providing controlled hydraulic petal expansion and deep tissue penetration across standard hunting distances.

Key Features

• Monolithic Copper Construction: Solid copper projectile maintains near-100% weight retention through dense muscle and bone without shedding lead particles.
• Blue Polymer Tip: Initiates rapid, uniform hydraulic expansion across a broad velocity envelope while optimizing external aerodynamics.
• Downrange Energy Retention: Maintains 1,980 fps and 1,567 ft·lb of kinetic energy at 400 yards, with a 30.2-inch drop based on a 100-yard zero.
• Non-Toxic Compliance: Fulfills regulatory lead-free requirements on public and concession hunting lands.

Technical Specifications

• Calibre: .300 Winchester Magnum
• Bullet Weight: 180 gr (11.70 g)
• Bullet Type: TXRG (eXergy Blue polymer-tipped monolithic copper solid)
• Bullet Diameter: 0.308 in (7.82 mm)
• Sectional Density: 0.271 lb/in²
• Ballistic Coefficients: G1: 0.442 | G7: 0.222
• Cartridge Overall Length (OAL): 3.339 in (84.8 mm)
• Muzzle Velocity: 2,753 fps (839 m/s)
• Muzzle Energy: 3,028 ft·lb (4,118 J)
• Rifle Compatibility: Standard SAAMI/C.I.P. .300 Win Mag chambers with standard 1:10" twist rates
• Box Quantity: 20 rounds

Who is the S&B Sellier & Bellot 300 Win Mag 180 Grain Txrg Blue Lead Free Ammo for?

• Hunters targeting large game in non-toxic zones — requires 3,028 ft·lb of muzzle energy and solid copper construction to achieve deep tissue penetration on game such as sambar deer, red deer, and feral boars while complying with lead-free centrefire rifle ammunition mandates.
• Hunters utilizing standard 1:10 twist rate .300 Winchester Magnum rifles — requires an aerodynamic G1 ballistic coefficient of 0.442 paired with a 180 gr projectile to ensure flight stability and near-100% weight retention without core-jacket separation.

Less suitable for: Extreme long-range shooting beyond 450 to 500 yards where terminal impact velocity drops below expansion thresholds (higher BC lead-core match or hunting ammunition is better suited), or small varmint hunting where monolithic solids pass through without transferring sufficient energy (rapidly fragmenting thin-jacket varmint ammunition is better suited).