.22 BB Cap (Bulleted Breech Cap) is a variety of .22 caliber rimfire ammunition which is used for indoor gallery shooting. It has no separate propellant charge, relying on the impulse created by the primer alone to fire a round lead ball. This results in a low muzzle velocity of around 700 ft/s (210 m/s) or less. More common is the .22 CB ammunition, which fires a slightly heavier conical bullet and is avialable in a variety of cardridge lengths.

Specifications

• Length:
  • Case: 0.284 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 Long Rifle

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