The Sellier & Bellot .300 Winchester Magnum 180 gr EDGE / TXRG Cutting Edge ammunition (manufacturer code V343052) provides a non-toxic, monolithic hunting solution designed for medium to large game. Featuring a solid tombac/copper construction with a red polymer tip and an SPCE-style cutting edge shoulder, each 180-grain (11.70 g) projectile initiates immediate expansion while retaining near 100% of its mass without jacket separation. Fired from a 600 mm test barrel, this factory-loaded ammunition achieves a muzzle velocity of 844 m/s (2,769 fps) and generates 4,167 Joules (3,073 ft-lbs) of muzzle energy, delivering flat trajectories and deep terminal penetration suited to Australian hunting conditions.

Key Features

• Monolithic Lead-Free Construction: Built from solid tombac and copper to comply with non-toxic hunting mandates and lead-restricted public land zones while avoiding lead core fragmentation.
• Cutting Edge Shoulder Profile: Features a sharp cutting edge on the projectile profile designed to punch a clean, circular entrance hole through hide and tissue for immediate wound track tracking.
• Polymer Tip Expansion: Uses a frontal polymer ballistic tip to facilitate rapid frontal expansion upon impact without sacrificing structural weight retention at magnum velocities.
• Extended Downrange Ballistics: Delivers ballistic coefficients of G1: 0.379 and G7: 0.190 with a recommended zero distance (MRD) of 171 metres, maintaining 2,225 Joules of kinetic energy at 300 metres and 1,767 Joules at 400 metres.

Specifications

• Calibre: .300 Winchester Magnum
• Manufacturer SKU: V343052
• Bullet Type: EDGE / TXRG Lead-Free Solid Tombac Projectile with Polymer Tip and Cutting Edge
• Bullet Weight: 180 grains (11.70 grams)
• Total Cartridge Weight: 31.9 grams per round (approximately 0.76 kg per 20-round box)
• Overall Cartridge Length (OAL): 84.80 mm
• Muzzle Velocity ($V_0$): 844 m/s (2,769 fps) from a 600 mm barrel
• Muzzle Energy ($E_0$): 4,167 Joules (3,073 ft-lbs)
• Ballistic Coefficients: G1: 0.379 | G7: 0.190
• Recommended Zero Distance (MRD): 171 metres
• Package Quantity: 20 cartridges per box

Who is the S&B Sellier & Bellot 300 Win Mag 180 grain TXRG (eXergy) Cutting Edge Lead Free Ammo for?

• Sambar and red deer hunters operating in lead-restricted hunting zones — requires non-toxic projectiles that maintain structural integrity, utilising this 300 Win Mag lead-free ammunition to generate 4,167 Joules of muzzle energy and 2,768 Joules at 200 metres for deep penetration through heavy bone and tissue.
• Wild boar and feral game hunters requiring deep-penetrating monolithic ammunition — benefits from a monolithic 180 gr solid tombac bullet driven at a muzzle velocity of 844 m/s, paired with a specialised cutting shoulder that cuts clean entry channels for consistent wound channels through thick game shields.

Less suitable for: Long-range hunting beyond 400 to 500 metres, where downrange velocity drops below the threshold required for monolithic copper bullets to reliably mushroom; shooters engaging targets beyond these distances require softer-expanding lead-core match or long-range hunting projectiles. It is also incompatible with non-standard .30 calibre chambers, requiring rifles specifically chambered in .300 Winchester Magnum rather than .300 WSM, .300 PRC, or .300 Weatherby.