The .376 Steyr was developed by Steyr Mannlicher in collaboration with Hornady and Jeff Cooper in 1999, designed specifically for the Steyr Scout rifle in a dangerous game configuration. It provides .375 H&H Magnum-class performance in a shorter, more compact package — suitable for a lightweight scout rifle while retaining enough energy for African dangerous game at appropriate ranges. The cartridge fits the Scout rifle concept of a general-purpose do-everything rifle.
Type: Rifle
Introduced: 1999, Austria
Parent case: .375 H&H Magnum
Standardization: SAAMI
Bullet diameter: 0.375" (9.53 mm)
Case length: 2.307" (58.6 mm)
Overall length: 3.05" (77.47 mm)
Max pressure: 52,175 PSI
Rim type: Rimless
Primer: Large Rifle
Typical twist rate: 1:12
Muzzle velocity: 2400–2600 fps
Muzzle energy: 2879–4516 ft-lbs
Effective range: 400 yd
Common bullet weights: 225, 250, 270, 300 gr
Primary use: hunting_large_game, hunting_dangerous_game
Production status: Limited
Also known as: 376 Steyr · 9.3x64 Steyr
History: Jeff Coopers Scout rifle concept specified a lightweight, general-purpose bolt-action handling to 1,000 meters but equally capable on dangerous game at close range. The standard Scout chamberings (.308 Win, .350 Rem Mag) were considered marginal for lion, leopard, and buffalo. Steyr and Hornady developed the .376 Steyr to fill this gap — a cartridge generating over 4,000 ft-lbs while fitting in a…
Notable firearms: Steyr Scout