Rifle · SAAMI
.375 Ruger
Matches .375 H&H Magnum performance in a standard (non-magnum-length) action.
- Caliber
- 0.375″ · 9.525 mm
- Introduced
- 2007
- Case
- Rimless
- Primary use
- Big Game, Dangerous Game
- Status
- Active
- Introduced
- 2007
- Type
- Rifle
- Origin
- United States
- Inventor
- Ruger / Hornady
- Manufacturer
- Ruger / Hornady
- Standard
- SAAMI
- Status
- Active
- Availability
- Common
- Case capacity
- 95 gr H₂O
- Twist (typical)
- 1:12
- Primer
- Large Rifle Magnum
- Case type
- Rimless
- Max pressure
- 62,000 psi
- Eff. range
- 400 yd
- Max range
- 800 yd
- Recoil
- 40–55 ft·lb
Ballistics
Published velocity/energy data isn't available for .375 Ruger.
Performance
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 9.53 | 0.375 | ✓ |
| Neck ⌀ | 10.29 | 0.405 | ✓ |
| Shoulder ⌀ | 13.08 | 0.515 | ✓ |
| Shoulder angle | 30° | — | ✓ |
| Base ⌀ | 13.51 | 0.532 | ✓ |
| Rim ⌀ | 13.51 | 0.532 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | ✓ |
| Neck length | 7.75 | 0.305 | ≈ |
| Case length | 65.53 | 2.580 | ✓ |
| Overall length | 84.84 | 3.340 | ✓ |
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. .375 Ruger is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
Suitable powders
2 reloading powders listed for .375 Ruger, 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 .375 Ruger
12 models in the database chamber .375 Ruger. Browse all →
Lineage
Connected reference
History
Developed jointly by Ruger and Hornady in 2007. Achieves .375 H&H velocity without the belted case or magnum action length. Designed for shorter, stiffer bolt actions for improved accuracy.
FAQs
- What twist rate does .375 Ruger use?
- .375 Ruger typically uses a 1:12 twist rate.
- What bullet diameter is .375 Ruger?
- .375 Ruger uses a 0.375″ (9.525 mm) diameter bullet.
- Is .375 Ruger still in production?
- .375 Ruger is active; typical availability is common.
- What is .375 Ruger used for?
- .375 Ruger is primarily used for big game, dangerous game.
- What are the best powders for .375 Ruger?
- Reloading powders commonly listed for .375 Ruger include Reloader 19, N170.
Sources & provenance
- Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
- Standard SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) — ANSI/SAAMI Z299.4 – 2015 (Centerfire Rifle) — Velocity & Pressure / Cartridge & Chamber Drawings · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 375 Ruger 250 gr. CX Outfitter — product page · grain_ballistics, representative_gun archived
- Manufacturer Hornady — Hornady 2022 Standard Ballistics Chart (PDF) · grain_ballistics, representative_gun
- Manufacturer Hornady — 375 Cal .375 250 gr CX bullet — product page (embedded spec data) · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 375 Ruger 270 gr InterLock SP-RP — product page · grain_ballistics, representative_gun
- Manufacturer Hornady — 375 Cal .375 270 gr InterLock SP-RP bullet — product page (embedded spec data) · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 375 Ruger 300 gr DGX Bonded — product page · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 375 Cal .375 300 gr DGX Bonded bullet — product page (embedded spec data) · grain_ballistics, representative_gun archived
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 43 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →