Lindcott Armory Rifle · Proprietary
.450 Rigby
Modern dangerous game cartridge from prestigious Rigby company.
- Caliber
- 0.4591″ · 11.66 mm
- Introduced
- 1995
- Case
- Rimless
- Parent
- .416 Rigby
- Primary use
- Hunting
- Status
- Limited
- Introduced
- 1995
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- Paul Roberts / John Rigby & Company
- Manufacturer
- John Rigby & Company
- Standard
- Proprietary
- Status
- Limited
- Availability
- Scarce
- Case capacity
- 130 gr H₂O
- Twist (typical)
- 1:16
- Primer
- Large Rifle Magnum
- Case type
- Rimless
- Max pressure
- 58,015 psi
- Eff. range
- 150 yd
- Max range
- 3200 yd
- Recoil
- 55–75 ft·lb
Ballistics
- By real loads
- 2,150–2,150 fps · 17 loads
- Parent case
- .416 Rigby
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Performance
Buy links open .450 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 ⌀ | 11.66 | 0.459 | ✓ |
| Neck ⌀ | 12.38 | 0.487 | ✓ |
| Shoulder ⌀ | 12.50 | 0.492 | ✓ |
| Shoulder angle | 40° | — | ✓ |
| Base ⌀ | 14.96 | 0.589 | ✓ |
| Rim ⌀ | 14.99 | 0.590 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.65 | 0.065 | ✓ |
| Neck length | 12.81 | 0.504 | ≈ |
| Case length | 73.50 | 2.894 | ✓ |
| Overall length | 95.25 | 3.750 | ✓ |
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. .450 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 |
|---|---|---|---|---|---|---|
| Graf | FMJ Standard | 480 | Soft Point | 2,150 | 4,926 | — |
| Hornady | DGS FMJ Solid | 480 | FMJ Solid | 2,150 | 4,926 | — |
| Bertram | Custom | 480 | Soft Point | 2,150 | 4,926 | — |
| Norma | Africa PH | 480 | Soft Point | 2,150 | 4,926 | — |
| Hornady | DGX Bonded SP | 480 | DGX Bonded SP | 2,150 | 4,926 | — |
| Federal | Federal Premium | 480 | Trophy Bonded Bear Claw | 2,150 | 4,926 | — |
| RWS | Classic | 480 | Soft Point | 2,150 | 4,926 | — |
| Buffalo Arms | Custom SP | 480 | Soft Point | 2,150 | 4,926 | — |
| Woodleigh | Woodleigh Safari | 480 | Weldcore SP | 2,150 | 4,926 | — |
| Kynoch | Soft Nose | 480 | Soft Point | 2,150 | 4,926 | — |
| A-Square | Dead Tough SP | 480 | Dead Tough SP | 2,150 | 4,926 | — |
| Northfork | FMJ Bonded Solid | 480 | FMJ Solid | 2,150 | 4,926 | — |
| John Rigby & Co. | SP Soft Nose | 480 | Soft Nose | 2,150 | 4,926 | — |
| John Rigby & Co. | FMJ Solid | 480 | FMJ Solid | 2,150 | 4,926 | — |
| PPU | PPU Standard | 480 | SP | 2,150 | 4,926 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Suitable powders
2 reloading powders listed for .450 Rigby, 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 .450 Rigby
3 models in the database chamber .450 Rigby. Browse all →
Lineage
Connected reference
History
Introduced in 1995 by Paul Roberts and John Rigby & Company as a modern dangerous game cartridge. Based on .416 Rigby case necked up to .458. Provides power level between .458 Lott and .505 Gibbs with manageable recoil. Uses modern powders and pressures for excellent ballistics. Rare and expensive but growing in popularity among serious African hunters.
FAQs
- What twist rate does .450 Rigby use?
- .450 Rigby typically uses a 1:16 twist rate.
- What bullet diameter is .450 Rigby?
- .450 Rigby uses a 0.4591″ (11.66 mm) diameter bullet.
- Is .450 Rigby still in production?
- .450 Rigby is limited; typical availability is scarce.
- What is .450 Rigby used for?
- .450 Rigby is primarily used for hunting.
- What is .450 Rigby based on?
- .450 Rigby is derived from the .416 Rigby case.
- What are the best powders for .450 Rigby?
- Reloading powders commonly listed for .450 Rigby include Reloader 25, Reloader 33.
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 →