.25 ACP

.25 ACP — Photo: DanMP5 at English Wikipedia · Public domain · background removed

Key specs

Type: Pistol
Origin: United States
Designer: John Browning
Introduced: 1905
Case type: semi-rimmed, straight
Bullet diameter: 6.38 mm
Case length: 15.62 mm
Overall length: 23.11 mm
Typical bullet: 22 gr
Typical velocity: 533 m/s
Typical energy: 203 J

Sources

Wikipedia: .25 ACP, Wikipedia