Rifle · Not SAAMI standardized · Not standardizedObsolete
.476 Nitro Express
.476 Nitro Express is a rimmed bottlenecked rifle cartridge of United Kingdom origin.
- Caliber
- 0.476″ · 12.09 mm
- Introduced
- 1907
- Case
- Rimmed
- Parent
- .500 Nitro Express
- Primary use
- Hunting
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1907
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- Westley Richards
- Manufacturer
- Westley Richards
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 135.2 gr H₂O
- Twist (typical)
- 1:20
- Primer
- Berdan 0.254 Inch
- Case type
- Rimmed
- Max pressure
- 41,000 psi, CIP transducer
- Eff. range
- 250 yd
- Max range
- 1250 yd
- Recoil
- 84.9 ft·lb
Introduced by Westley Richards
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .476 Nitro Express, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic Compare- Parent case
- .500 Nitro Express
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
Wikipedia · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 12.09 | 0.476 | · |
| Neck ⌀ | 12.90 | 0.508 | · |
| Shoulder ⌀ | 13.46 | 0.530 | · |
| Shoulder angle | 15° | — | |
| Base ⌀ | 14.48 | 0.570 | · |
| Rim ⌀ | 16.33 | 0.643 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.88 | 0.074 | |
| Neck length | 12.49 | 0.492 | |
| Case length | 76.20 | 3.000 | · |
| Overall length | 95.76 | 3.770 | · |
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. .476 Nitro Express is highlighted below.
Missing a dimension for .476 Nitro Express? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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.
Lineage
Connected reference
History
Introduced around 1907 by Westley Richards, derived from the .500 Nitro Express.
FAQs
- What twist rate does .476 Nitro Express use?
- .476 Nitro Express typically uses a 1:20 twist rate.
- What bullet diameter is .476 Nitro Express?
- .476 Nitro Express uses a 0.476″ (12.09 mm) diameter bullet.
- Is .476 Nitro Express still in production?
- .476 Nitro Express is obsolete; typical availability is collector.
- What is .476 Nitro Express used for?
- .476 Nitro Express is primarily used for hunting.
- What is .476 Nitro Express based on?
- .476 Nitro Express is derived from the .500 Nitro Express case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
