The Norma .375 H&H Magnum 300gr Oryx is a premium factory-loaded centrefire rifle ammunition packaged in a 20-round box. Built on reloadable boxer-primed brass, this cartridge combines a 300-grain (19.4-gram) bonded soft point projectile with high terminal energy to ensure reliable performance on large, tough, and dangerous game. Its bonded construction fuses the lead core to the gilding jacket, ensuring rapid initial mushrooming while retaining up to 99% of its residual weight for deep, straight-line penetration through heavy bone and thick muscle tissue.

Key Features

• Chemical Core-to-Jacket Bonding: Prevents core separation upon high-velocity impact, maintaining projectile integrity and weight retention up to 99%.
• Zoned Jacket Architecture: Features a thinner forward jacket with a non-bonded tip for rapid initial expansion, supported by a thicker rear jacket wall to sustain deep tissue penetration.
• Substantial Terminal Energy: Produces 5,901 J of muzzle energy and maintains 3,586 J at 200 m, delivering the stopping power required for large game.
• Reloadable Boxer Brass: Manufactured with premium belted rimless magnum brass cases and non-corrosive boxer primers for reliable ignition across temperate and tropical climates.

Technical Specifications

• Calibre: .375 Holland & Holland Magnum
• Bullet Weight: 300 grains (19.4 grams)
• Bullet Type: Oryx Bonded Soft Point (SP)
• Ballistic Coefficient: 0.320 (G1)
• Muzzle Velocity ($V_0$): 780 m/s (2,559 ft/s) via 660 mm test barrel
• Muzzle Energy ($E_0$): 5,901 J (4,362 ft-lb)
• Velocity at 100 m / 200 m / 300 m: 691 m/s / 608 m/s / 532 m/s
• Energy at 100 m / 200 m / 300 m: 4,632 J / 3,586 J / 2,745 J
• Most Recommended Distance (MRD / Zero): 155 m
• Package Quantity: 20 rounds per box

Who is the Norma .375 H&H 300gr Oryx for?

• Northern Territory water buffalo and scrub bull hunters — requires the 5,901 J of muzzle energy and bonded 300-grain projectile of this .375 H&H Magnum ammunition to punch through thick hide and break heavy skeletal structures at typical bush ranges.
• Heavy Sambar deer hunters — benefits from the 780 m/s muzzle velocity and rapid mushrooming of the Oryx bonded soft point to anchor large deer quickly in dense cover.
• African safari large and dangerous game hunters — relies on the controlled expansion and 99% weight retention of this 300-grain .375 H&H Magnum load to deliver consistent terminal penetration on heavy plains and dangerous game within a 155 m zero.

Less suitable for: Target engagements beyond 300–400 metres where the 0.320 G1 ballistic coefficient causes significant drop and wind drift compared to high-BC polymer-tipped match ammunition; small or thin-skinned game where the 5,901 J terminal energy is excessive compared to standard medium calibres; and stopping charges from thick-skinned pachyderms requiring non-expanding solid monolithic projectiles.