Lindcott Armory Rifle · Proprietary
.275 Rigby
John Rigby & Company's commercial name for the 7x57mm Mauser — the cartridge used by legendary hunter and naturalist Jim Corbett to take man-eating tigers across India.
- Caliber
- 0.2854″ · 7.25 mm
- Introduced
- 1899
- Case
- Rimless
- Parent
- 7mm Mauser
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1899
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- John Rigby & Company
- Manufacturer
- John Rigby & Company / Norma / various
- Standard
- Proprietary
- Status
- Active
- Availability
- Specialty
- Case capacity
- 57 gr H₂O
- Twist (typical)
- 1:9
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 51,000 psi
- Eff. range
- 300 yd
- Max range
- 1000 yd
- Recoil
- 12–16 ft·lb
Ballistics
- By real loads
- 2,650–2,950 fps · 17 loads
- Parent case
- 7mm Mauser
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Performance
Buy links open .275 Rigby 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 ⌀ | 7.25 | 0.285 | ✓ |
| Neck ⌀ | 8.25 | 0.325 | ✓ |
| Shoulder ⌀ | 10.92 | 0.430 | ✓ |
| Shoulder angle | 20.5° | — | ✓ |
| Base ⌀ | 12.01 | 0.473 | ✓ |
| Rim ⌀ | 12.10 | 0.476 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.15 | 0.045 | ✓ |
| Neck length | 9.59 | 0.378 | ≈ |
| Case length | 57.00 | 2.244 | ✓ |
| Overall length | 78.00 | 3.071 | ✓ |
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. .275 Rigby is highlighted below.
Factory loads
In production — 17 active loads across 14 brands. Top 15 shown · see all 20 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Woodleigh | Woodleigh Safari | 140 | Weldcore SP | 2,950 | 2,705 | — |
| Graf & Sons | Graf Heritage | 140 | SP | 2,950 | 2,705 | — |
| Hornady | Custom Interlock SP | 140 | Interlock SP | 2,800 | 2,437 | — |
| Federal | Trophy Bonded Tip | 140 | Trophy Bonded Tip | 2,800 | 2,437 | — |
| John Rigby & Co. | SP Soft Nose | 140 | Soft Nose | 2,800 | 2,437 | — |
| John Rigby & Co. | FMJ Solid | 140 | FMJ Solid | 2,800 | 2,437 | — |
| Norma | Oryx SP | 140 | Oryx SP | 2,800 | 2,437 | — |
| Hornady | Custom SP | 139 | InterLock SP | 2,750 | 2,334 | — |
| PPU | SP | 139 | SP | 2,700 | 2,250 | — |
| Sellier & Bellot | SP | 140 | SP | 2,700 | 2,266 | — |
| Graf | SP | 140 | SP | 2,695 | 2,257 | — |
| Nosler | Trophy Grade AccuBond | 140 | AccuBond | 2,690 | 2,249 | — |
| Norma | Oryx | 156 | SP | 2,690 | 2,506 | — |
| Wolf | SP | 140 | SP | 2,690 | 2,249 | — |
| RWS | DK | 173 | SP | 2,660 | 2,718 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
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 .275 Rigby
7 models in the database chamber .275 Rigby. Browse all →
Lineage
Connected reference
History
John Rigby & Company adopted the 7x57mm Mauser cartridge for their sporting rifles around 1899 and marketed it as the .275 Rigby. The cartridge gained its most famous association through Jim Corbett — the hunter tasked by the Indian government with eliminating man-eating tigers and leopards responsible for hundreds of deaths in the Kumaon region of northern India. Corbett used a .275 Rigby bolt-action almost exclusively, praising its accuracy, flat trajectory, and sufficient power for large cats. His books, including 'Man-Eaters of Kumaon' (1944), made the .275 Rigby globally famous. W.D.M. 'Karamojo' Bell also used 7x57mm for elephant hunting, demonstrating that precise bullet placement could take the largest game with a modest cartridge. John Rigby & Company — revived in 2014 after a long dormancy — still chambers rifles in .275 Rigby.
FAQs
- What twist rate does .275 Rigby use?
- .275 Rigby typically uses a 1:9 twist rate.
- What bullet diameter is .275 Rigby?
- .275 Rigby uses a 0.2854″ (7.25 mm) diameter bullet.
- Is .275 Rigby still in production?
- .275 Rigby is active; typical availability is specialty.
- What is .275 Rigby used for?
- .275 Rigby is primarily used for hunting.
- What is .275 Rigby based on?
- .275 Rigby is derived from the 7x57mm Mauser case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 17 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →