Lindcott Armory Rifle · SAAMI
.376 Steyr
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.
- Caliber
- 0.375″ · 9.525 mm
- Introduced
- 1999
- Case
- Rimless
- Parent
- .375 H&H Magnum
- Primary use
- hunting_large_game, hunting_dangerous_game
- Status
- Limited
- Introduced
- 1999
- Type
- Rifle
- Origin
- Austria
- Inventor
- Jeff Cooper, Steyr Mannlicher, Hornady
- Manufacturer
- Hornady, Steyr
- Standard
- SAAMI
- Status
- Limited
- Availability
- Rare
- Case capacity
- 80 gr H₂O
- Twist (typical)
- 1:12
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 62,366 psi
- Eff. range
- 300 yd
- Recoil
- 20–28 ft·lb
Ballistics
- By real loads
- 2,600–2,650 fps · 20 loads
- Parent case
- .375 H&H Magnum
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Performance
Buy links open .376 Steyr ammunition at Rivertown Munitions.
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
CIP TDCC · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 9.53 | 0.375 | ✓ |
| Neck ⌀ | 10.11 | 0.398 | ✓ |
| Shoulder ⌀ | 12.02 | 0.473 | ✓ |
| Shoulder angle | 17.5° | — | ✓ |
| Base ⌀ | 12.72 | 0.501 | ✓ |
| Rim ⌀ | 12.55 | 0.494 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | ✓ |
| Neck length | 9.03 | 0.356 | ≈ |
| Case length | 59.69 | 2.350 | ✓ |
| Overall length | 79.00 | 3.110 | ✓ |
Size vs familiar rounds
Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .376 Steyr is highlighted below.
Factory loads
In production — 20 active loads across 15 brands. Top 15 shown · see all 20 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Barnes | TSX | 250 | TSX | 2,650 | 3,898 | — |
| Hornady | Custom DGS FMJ Solid | 270 | FMJ Solid | 2,600 | 4,052 | — |
| Hornady | Custom DGX Bonded SP | 270 | DGX Bonded SP | 2,600 | 4,052 | — |
| Hornady | Custom Interlock SP | 270 | Interlock SP | 2,600 | 4,052 | — |
| A-Square | Dead Tough SP | 270 | Dead Tough SP | 2,600 | 4,052 | — |
| PPU | Standard | 270 | Soft Point | 2,600 | 4,052 | — |
| Norma | Classic | 270 | Soft Point | 2,600 | 4,052 | — |
| RWS | Classic | 270 | Soft Point | 2,600 | 4,052 | — |
| Remington | Core-Lokt | 270 | SP | 2,600 | 4,052 | — |
| Hornady | Custom | 270 | SP | 2,600 | 4,052 | — |
| Buffalo Arms | Custom | 270 | Soft Point | 2,600 | 4,052 | — |
| Norma | Oryx | 270 | Oryx | 2,600 | 4,052 | — |
| Kynoch | Classic | 270 | Soft Point | 2,600 | 4,052 | — |
| Wolf | FMJ | 270 | Soft Point | 2,600 | 4,052 | — |
| Black Hills | Gold | 270 | AccuBond | 2,600 | 4,052 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Suitable powders
1 reloading powder listed for .376 Steyr, fastest to slowest. Cross-reference in the finder →
Reloading costestimate cost per round vs factory
Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.
Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.
Firearms chambered in .376 Steyr
4 models in the database chamber .376 Steyr. Browse all →
Lineage
ⓘ Most-direct documented parent is 9.3×64mm Brenneke (not yet in the reference).
Connected reference
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 short-action envelope. The Steyr Scout in .376 was Coopers preferred dangerous game Scout configuration.
FAQs
- What twist rate does .376 Steyr use?
- .376 Steyr typically uses a 1:12 twist rate.
- What bullet diameter is .376 Steyr?
- .376 Steyr uses a 0.375″ (9.525 mm) diameter bullet.
- Is .376 Steyr still in production?
- .376 Steyr is limited; typical availability is rare.
- What is .376 Steyr used for?
- .376 Steyr is primarily used for hunting_large_game, hunting_dangerous_game.
- What is .376 Steyr based on?
- .376 Steyr is derived from the .375 H&H Magnum case.
- What are the best powders for .376 Steyr?
- Reloading powders commonly listed for .376 Steyr include Reloader 19.
Sources & provenance
- StandardSAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawingsarchived
- StandardC.I.P. — C.I.P. TDCC — Tables of Dimensions of Cartridges and Chambers
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 20 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →