Revolver · Military · Not SAAMI standardized · Not standardizedObsolete
10.4mm Swiss Rimfire
The 10.4mm Swiss Rimfire was the cartridge of the Swiss Ordnance Revolver M1872, a 193 gr lead bullet at about 610 fps in a 20 mm rimmed copper case..
- Caliber
- 0.4236″ · 10.76 mm
- Introduced
- 1872
- Case
- Rimmed
- Primary use
- Military
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1872
- Type
- Revolver
- Origin
- Switzerland
- Inventor
- Swiss Federal arms (approx; M1872 revolver adapted by Rudolf Schmidt)
- Manufacturer
- Swiss federal ammunition works (approx)
- Standard
- Military · Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 20 gr H₂O
- Twist (typical)
- 1:20
- Primer
- Rimfire
- Case type
- Rimmed
- Max pressure
- 14,500 psi, CIP transducer
- Eff. range
- 50 yd
- Max range
- 2650 yd
- Recoil
- 7.1–11 ft·lb
- Subsonic
- Capable
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 10.4mm Swiss Rimfire, 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
- —
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.
cartridge-corner · secondary source| 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 | 1.61 | 0.063 | |
| Neck length | n/a | ||
| Case length | 20.00 | 0.787 | · |
| Overall length | 31.70 | 1.248 | · |
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 Rimfire is highlighted below.
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
Adopted 1872; nearly all M1872 revolvers were converted to the 10.4mm Swiss Centerfire in 1878.
FAQs
- What twist rate does 10.4mm Swiss Rimfire use?
- 10.4mm Swiss Rimfire typically uses a 1:20 twist rate.
- What bullet diameter is 10.4mm Swiss Rimfire?
- 10.4mm Swiss Rimfire uses a 0.4236″ (10.76 mm) diameter bullet.
- Is 10.4mm Swiss Rimfire still in production?
- 10.4mm Swiss Rimfire is obsolete; typical availability is collector.
- What is 10.4mm Swiss Rimfire used for?
- 10.4mm Swiss Rimfire is primarily used for military.
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 →
