Revolver · Not SAAMI standardized · Not standardizedObsolete
10.4mm Swiss Ordnance
Switzerland's military revolver cartridge adopted in 1877 for the Chamelot-Delvigne revolver.
- Caliber
- 0.4236″ · 10.76 mm
- Introduced
- 1878
- Case
- Rimless
- Parent
- 10.4mm Swiss Rimfire
- Primary use
- Military/LE
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1878
- Type
- Revolver
- Origin
- Switzerland
- Inventor
- Swiss military
- Manufacturer
- Swiss Military
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Collector
- Case capacity
- 20 gr H₂O
- Twist (typical)
- 1:20
- Primer
- Boxer Small Pistol
- Case type
- Rimless
- Max pressure
- 15,000 psi, CIP transducer
- Eff. range
- 50 yd
- Max range
- 2650 yd
- Recoil
- 7.1–11 ft·lb
- Subsonic
- Capable
Ballistics
Published velocity/energy data isn't available for 10.4mm Swiss Ordnance — an obsolete/collector cartridge. Parent case: 10.4mm Swiss Rimfire.
Performance
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
Wikipedia · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 10.76 | 0.424 | ✓ |
| Neck ⌀ | 10.80 | 0.425 | ✓ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 11.20 | 0.441 | ✓ |
| Rim ⌀ | 13.30 | 0.524 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.10 | 0.043 | ✓ |
| Neck length | n/a | ||
| Case length | 20.00 | 0.787 | ✓ |
| Overall length | 32.00 | 1.260 | ✓ |
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. 10.4mm Swiss Ordnance is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
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
History
Switzerland adopted this revolver cartridge in 1877 for the Schmidt-Galand and later Chamelot-Delvigne revolvers issued to Swiss officers. A simple black powder design that served the Swiss military until replaced by Schmidt-Rubin rifle cartridges and more modern pistols in the early 20th century.
FAQs
- What twist rate does 10.4mm Swiss Ordnance use?
- 10.4mm Swiss Ordnance typically uses a 1:20 twist rate.
- What bullet diameter is 10.4mm Swiss Ordnance?
- 10.4mm Swiss Ordnance uses a 0.4236″ (10.76 mm) diameter bullet.
- Is 10.4mm Swiss Ordnance still in production?
- 10.4mm Swiss Ordnance is discontinued; typical availability is collector.
- What is 10.4mm Swiss Ordnance used for?
- 10.4mm Swiss Ordnance is primarily used for military/le.
- What is 10.4mm Swiss Ordnance based on?
- 10.4mm Swiss Ordnance is derived from the 10.4mm Swiss Rimfire case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 4 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
