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Lindcott Armory

Rifle · SAAMI

.404 Jeffery

Also known as .404 Rimless NE · 10.75x73mm

W.J.

Caliber
0.422″ · 10.72 mm
Introduced
1905
Case
Rimless
Primary use
Dangerous Game, Big Game
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains300 · 400 · 450 gr
Identity
Introduced
1905
Type
Rifle
Origin
United Kingdom
Inventor
W.J. Jeffery
Manufacturer
W.J. Jeffery & Co.
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
122 gr H₂O
Twist (typical)
1:16
Primer
Large Rifle Magnum
Case type
Rimless
Pressure & range
Max pressure
52,939 psi
Eff. range
300 yd
Max range
700 yd
Recoil
60–80 ft·lb

Ballistics

Published velocity/energy data isn't available for .404 Jeffery.

Performance

Best for Withheld until verified
Best for Withheld until verified
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
Measuremmin✓
Bullet ⌀ 10.720.422 ✓
Neck ⌀ 11.480.452 ✓
Shoulder ⌀ 13.460.530 ✓
Shoulder angle 8.5°— ✓
Base ⌀ 13.840.545 ✓
Rim ⌀ 13.790.543 ✓
Belt ⌀ n/a
Rim thickness 1.270.050 ✓
Neck length 15.840.624 ≈
Case length 73.022.875 ✓
Overall length 89.663.530 ✓

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. .404 Jeffery is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

Suitable powders

2 reloading powders listed for .404 Jeffery, fastest to slowest. Cross-reference in the finder →

N170Reloader 25
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 .404 Jeffery

12 models in the database chamber .404 Jeffery. Browse all →

Rigby Highland Stalker .375 H&H MagChapuis Armes ROLS AfriqueHeym SR 30 .300 Win Mag 24-inchDakota Arms Dakota 76 .404 Jeffery 25-inchHeym Express by Heym .404 Jeffery 24-inchHartmann & Weiss H&W Express RifleHolland & Holland Royal Bolt .375 H&H MagWestley Richards Modele de Luxe .375 H&HJeffery Bolt Action .404 JefferyHolland & Holland Royal Double Rifle 404 JefferyHolland & Holland Sporting Bolt-Action 404 JefferyJohn Rigby & Co Big Game Rifle 404 Jeffery

Lineage

Immediate parent
Root — no documented parent
Direct descendants (13 · 18 total)
.300 WSM.300 Remington Ultra Magnum.300 Dakota.416 Dakota.270 WSM8.5x55mm Blaser7mm WSM.26 Nosler.375 Remington Ultra Magnum.27 Nosler.330 Dakota7mm Remington Ultra Magnum.375 Dakota.333 Jeffery7mm Dakota
Family TreeOpen .404 Jeffery in the interactive cartridge family tree

Connected reference

Loads47 factory loads for .404 JefferyReloading2 suitable powders — cross-referenceFirearmsFirearms in .404 Jeffery

History

Introduced by W.J. Jeffery in 1905 for magazine rifles rather than double rifles. The rimless design fed reliably in bolt-action Mausers. Professional hunters in Africa adopted it widely. Its case dimensions influenced cartridge designers for a century — the .375 H&H, .416 Rigby, and numerous other cartridges all borrowed from the .404 Jeffery's case family.

FAQs

What twist rate does .404 Jeffery use?
.404 Jeffery typically uses a 1:16 twist rate.
What bullet diameter is .404 Jeffery?
.404 Jeffery uses a 0.422″ (10.72 mm) diameter bullet.
Is .404 Jeffery still in production?
.404 Jeffery is active; typical availability is common.
What is .404 Jeffery used for?
.404 Jeffery is primarily used for dangerous game, big game.
What are the best powders for .404 Jeffery?
Reloading powders commonly listed for .404 Jeffery include N170, Reloader 25.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 51 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →