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.22 BB Cap (Bulleted Breech Cap), also known as the 6 mm 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 with gallery guns.
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cap 22 flobert cartridge bb rimfire mm velocity cb indoor shooting bullet louis-nicolas 1845 cartridges designed first guns also rifle
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| .22 BB | Base diameter | .224 in (5.7 mm) | 1.00 | infobox |
| .22 BB | Bullet diameter | .223 in (5.7 mm) | 1.00 | infobox |
| .22 BB | Bullet mass/type | Bullet mass/type Velocity Energy 20 gr (1 g) rn 780 ft/s (240 m/s) 26 ft⋅lbf (35 J) 18 gr (1 g) rn 780 ft/s (240 m/s) 24 ft⋅lbf (33 J) 16 gr (1 g) rn 750 ft/s (230 m/s) 20 ft⋅lb… | 1.00 | infobox |
| .22 BB | Case length | .284 in (7.2 mm) | 1.00 | infobox |
| .22 BB | Case type | Rimmed, straight | 1.00 | infobox |
| .22 BB | Designed | 1845 | 1.00 | infobox |
| .22 BB | Designer | Louis-Nicolas Flobert | 1.00 | infobox |
| .22 BB | Maximum pressure | 5,000–8,000 psi (34.47–55.16 MPa) | 1.00 | infobox |
| .22 BB | Neck diameter | .224 in (5.7 mm) | 1.00 | infobox |
| .22 BB | Overall length | .343 in (8.7 mm) | 1.00 | infobox |
| .22 BB | Parent case | Tapered percussion cap | 1.00 | infobox |
| .22 BB | Place of origin | France | 1.00 | infobox |
| .22 BB | Primer type | Rimfire | 1.00 | infobox |
| .22 BB | Produced | 1845–present | 1.00 | infobox |
| .22 BB | Rim diameter | .270 in (6.9 mm) | 1.00 | infobox |
| .22 BB | Rim thickness | .040 in (1.0 mm) | 1.00 | infobox |
| .22 BB | Type | Rifle | 1.00 | infobox |
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