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.22 BB Cap (Bulleted Breech Cap) also known as the 6mm Flobert, is a variety of .22 caliber rimfire ammunition. Invented by Louis-Nicolas Flobert in 1845, it was the first rimfire metallic cartridge. The .22 BB Cap and .22 CB Cap are interchangeable and are relatively quiet low velocity cartridges, designed for indoor target shooting.
Shooting section (''la section de tir'')
of the official website (in French) of a modern indoor shooting association in Belgium, ''Les Arquebusier de Visé''. In Europe, the .22 BB Cap and .22 CB Cap are both called 6mm Flobert and are considered the same cartridge.
.22 BB Cap (Bulleted Breech Cap) also known as the 6mm Flobert, is a variety of .22 caliber rimfire ammunition. Invented by Louis-Nicolas Flobert in 1845, it was the first rimfire metallic cartridge. The .22 BB Cap and .22 CB Cap are interchangeable and are relatively quiet low velocity cartridges, designed for indoor target shooting.
History
Frenchman Louis-Nicolas Flobert invented the first rimfire metallic cartridge in 1845. His cartridge consisted of apercussion cap
The percussion cap or percussion primer, introduced in the early 1820s, is a type of single-use percussion ignition device for muzzle loader firearm locks enabling them to fire reliably in any weather condition. This crucial invention gave rise ...
with a bullet attached to the top. Flobert then made what he called " parlor guns" for this cartridge, as these rifles and pistols were designed to be shot in indoor shooting parlors in large homes. Usually derived in the 6 mm and 9 mm calibres, it is since then called the Flobert cartridge, but it does not contain any powder; the only propellant
A propellant (or propellent) is a mass that is expelled or expanded in such a way as to create a thrust or other motive force in accordance with Newton's third law of motion, and "propel" a vehicle, projectile, or fluid payload. In vehicles, the ...
substance contained in the cartridge is within the percussion cap.of the official website (in French) of a modern indoor shooting association in Belgium, ''Les Arquebusier de Visé''. In Europe, the .22 BB Cap and .22 CB Cap are both called 6mm Flobert and are considered the same cartridge.
Description
These rimfires closely resemble a .22 caliberair rifle
An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chemical ...
in power and are often used for indoor shooting and close range pest control. Developed for indoor shooting galleries with special " gallery guns", the .22 BB Cap was the first rimfire cartridge, dating back to 1845. It has no separate propellant
A propellant (or propellent) is a mass that is expelled or expanded in such a way as to create a thrust or other motive force in accordance with Newton's third law of motion, and "propel" a vehicle, projectile, or fluid payload. In vehicles, the ...
charge, relying on the impulse created by the primer alone to fire a round lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, ...
ball. This results in a low muzzle velocity of around 700 ft/s (210 m/s) or less. More common is the .22 CB cap, which fires a slightly heavier conical bullet and is available in a variety of cartridge lengths.
Specifications
* Length: ** Case: .284 in (7.2 mm) ** Overall: .343 in (8.7 mm) * Bullet weight: 18 gr (1.17 g)See also
* .22 CB * .22 Short * .22 Long * .22 Extra Long * .22 Long Rifle * .22 Magnum * .22 Hornet * List of rimfire cartridgesReferences
{{DEFAULTSORT:22 BB Pistol and rifle cartridges Rimfire cartridges