Pistol · Not SAAMI standardized · Not standardizedObsolete
2.7mm Kolibri
The smallest commercially produced centerfire pistol cartridge ever made.
- Caliber
- 0.1063″ · 2.7 mm
- Introduced
- 1914
- Case
- Rimless
- Primary use
- Self Defense
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1914
- Type
- Pistol
- Origin
- Austria
- Inventor
- Franz Pfannl
- Manufacturer
- Kolibri
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Antique
- Case capacity
- 1 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Centerfire
- Case type
- Rimless
- Max pressure
- 25,000 psi, CIP transducer
- Max range
- 950 yd
- Subsonic
- Capable
Ballistics
Published velocity/energy data isn't available for 2.7mm Kolibri — an obsolete/collector cartridge.
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 · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 2.70 | 0.106 | ~ |
| Neck ⌀ | 3.50 | 0.138 | · |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 3.60 | 0.142 | · |
| Rim ⌀ | 3.60 | 0.142 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 0.40 | 0.016 | |
| Neck length | n/a | ||
| Case length | 9.40 | 0.370 | · |
| Overall length | 11.00 | 0.433 | ~ |
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. 2.7mm Kolibri 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.
History
Designed by Austrian watchmaker Franz Pfannl around 1910–1914, the Kolibri (German for 'hummingbird') pistol and cartridge represent the extreme miniaturization of early semi-automatic pistol design. The pistol measured just 2.7 inches long. Production was very limited and ended after WWI. Complete Kolibri pistols with original ammunition are extremely rare; a single round can fetch significant sums at auction.
FAQs
- What twist rate does 2.7mm Kolibri use?
- 2.7mm Kolibri typically uses a 1:10 twist rate.
- What bullet diameter is 2.7mm Kolibri?
- 2.7mm Kolibri uses a 0.1063″ (2.7 mm) diameter bullet.
- Is 2.7mm Kolibri still in production?
- 2.7mm Kolibri is discontinued; typical availability is antique.
- What is 2.7mm Kolibri used for?
- 2.7mm Kolibri is primarily used for self defense.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 3 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
