Lindcott Armory Rifle · CIP standardized
.400 Jeffery Nitro Express
W.J.
- Introduced
- 1902
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- W.J. Jeffery & Co.
- Manufacturer
- W.J. Jeffery & Co.
- Standard
- CIP standardized
- Status
- Limited
- Availability
- Limited
- Bullet ⌀
- 0.408″
- Case capacity
- 110 gr H₂O
- Twist
- 1:16
- Primer
- Boxer Large Rifle
- Case type
- Rimless
- Max pressure
- 47,000 psi
- Eff. range
- 400 yd
- Recoil
- 60–80 ft·lb
Ballistics
- Velocity
- 2,100–2,150 fps
- Energy
- 3,908–4,099 ft·lb
- By real loads
- 2,050–2,150 fps · 19 loads
- Typical MSRP
- $1.60/rd · price history →
- Parent case
- —
Representative trajectory — modeled from a single velocity input, not a measured load. Real published loads span the "by real loads" range above.
Factory loads
In production — 19 active loads across 13 brands. Top 15 shown · see all 20 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC | $/rd |
|---|---|---|---|---|---|---|---|
| Bertram | Custom | 400 | Soft Point | 2,150 | 4,105 | — | $4.50 |
| Kynoch | Soft Nose | 400 | Soft Nose | 2,150 | 4,105 | — | $8.00 |
| Sellier & Bellot | SP | 400 | Soft Point | 2,150 | 4,105 | — | $0.85 |
| Graf | Standard | 400 | Soft Point | 2,150 | 4,105 | — | $0.75 |
| Norma | Africa PH | 400 | Soft Point | 2,150 | 4,105 | — | $1.60 |
| RWS | Classic | 400 | Soft Point | 2,150 | 4,105 | — | $1.60 |
| PPU | SP | 400 | Soft Point | 2,150 | 4,105 | — | $0.60 |
| Kynoch | Big Game / Nitro Express | 400 | Metal Covered Soft Nose | 2,150 | 4,105 | — | $8.00 |
| Hornady | DGS FMJ Solid | 400 | FMJ Solid | 2,125 | 4,010 | — | $0.85 |
| Woodleigh | Woodleigh Safari | 400 | Weldcore SP | 2,125 | 4,010 | — | — |
| Federal | Federal Premium | 400 | Trophy Bonded Bear Claw | 2,125 | 4,010 | — | — |
| A-Square | Dead Tough SP | 400 | Dead Tough SP | 2,125 | 4,010 | — | — |
| Hornady | DGX Bonded SP | 400 | DGX Bonded SP | 2,125 | 4,010 | — | $0.85 |
| Northfork | FMJ Bonded Solid | 400 | FMJ Solid | 2,125 | 4,010 | — | — |
| Kynoch | FMJ Solid | 400 | FMJ Solid | 2,125 | 4,010 | — | $8.00 |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Dimensions
Reloading cost
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.
Connected reference
History
W.J. Jeffery & Co. developed this rimless dangerous game cartridge around 1905. The .400 Jeffery fires 400-grain bullets at ~2,100 fps from bolt-action rifles, making it one of the few large-bore dangerous game rounds designed specifically for bolt-actions rather than double rifles. Still chambered by custom gunmakers.
FAQs
- What twist rate does .400 Jeffery Nitro Express use?
- .400 Jeffery Nitro Express typically uses a 1:16 twist rate.
- What bullet diameter is .400 Jeffery Nitro Express?
- .400 Jeffery Nitro Express uses a 0.408″ (10.36 mm) diameter bullet.
- Is .400 Jeffery Nitro Express still in production?
- .400 Jeffery Nitro Express is limited; typical availability is limited.
- What is .400 Jeffery Nitro Express used for?
- .400 Jeffery Nitro Express is primarily used for hunting.
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 19 live factory loads; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →