.17 Ackley Bee

Photo coming soon: side view on a transparent background, with author and license.

Key specs

Type: Rifle
Origin: United States
Designer: P.O. Ackley
Case type: rimmed, bottleneck
Bullet diameter: 4.37 mm
Case length: 34.29 mm
Typical bullet: 20 gr
Typical velocity: 1,172 m/s
Typical energy: 891 J
Parent case: .218 Bee

Sources

Wikipedia: .17 Ackley Bee, Wikipedia