2 mm hummingbird
| 2 mm hummingbird | |
|---|---|
| general information | |
| caliber | 2.7 mm hummingbird |
| Sleeve shape | Rimless with pull-out groove |
| Dimensions | |
| Sleeve shoulder ⌀ | 3.56 mm |
| Sleeve neck ⌀ | 3.53 mm |
| Floor ⌀ | 2.72 mm |
| Cartridge bottom ⌀ | 3.56 mm |
| Sleeve length | 9.4 mm |
| Cartridge length | 10.92 mm |
| Weights | |
| Bullet weight | 0.194 g (3 grain ) |
| total weight | 5.3 g |
| Technical specifications | |
| Speed v 0 | 213 m / s |
| Bullet energy E 0 | 2.8 to 3.25 yrs |
| Lists on the subject | |
The 2 mm Kolibri (also known as 2,7 mm Hummingbird Car Pistol or 2.7 x 9 mm Hummingbird ), is the smallest commercially produced cartridge with centerfire ignition .
description
The cartridge was officially introduced in 1914. It is not suitable for hunting; in the literature it is stated that a lethal effect can be expected at most in mice and smaller vermin. With a projectile energy of only 2.8 to 3.25 joules , the cartridge could only penetrate a softwood board about the thickness of a thumb . For this caliber there was a semi-automatic pistol and single loader. It must not be confused with the 3 mm Kolibri, which also exists , because it has different dimensions.
history
It was designed by the Austrian watchmaker Franz Pfannl , whose project was financially supported by Georg Grabner . After registering in 1909, Pfannl received a patent in 1910 for the manufacture of the housing of such a small “automatic” pistol from punched, bent, riveted and soldered sheet metal under patent number 45314 in the Austrian Empire . The pistols and the single loaders were offered as self-defense weapons.
Hummingbird gun
Hummingbird gun
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The guns did not sell well because the small size of the gun and ammunition made them very difficult to handle and they were hardly suitable for self-defense. A precise hit with the weapon was impossible because the barrel had no pulls and thus the bullet could not be stabilized by a twist . The caliber didn't catch on. Therefore the production was stopped in 1938.
literature
- Frank C. Barnes: Cartridges of the World: A Complete and Illustrated Reference for Over 1500 Cartridges . 12th edition. Gun Digest Books, Iola WI 2009, ISBN 978-0-89689-936-0 (English).
Web links
- Pictures and technical information about the 2 mm Kolibri cartridge - municion.org (Spanish)
- numerous detailed shots of the Kolibri weapon - littlegun.be (private collector's website, French) ( memento from February 26, 2010 in the Internet Archive )
- Patent information for the production of the Kolibri - v3.espacenet.com (English, German patent)
- Ian McCollum: Forgotten Weapons: The Smallest Production Pistol Ever Made popularmechanics.com, July 7, 2016 - (English)
- Chris Eger: The 2mm Kolibri: The world's smallest centerfire pistol? guns.com, March 4, 2013 - (English)