.360 No. 5 Rook

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

Key specs

Type: Rifle
Origin: United Kingdom
Introduced: 1880
Case type: rimmed, straight
Bullet diameter: 9.19 mm
Case length: 26.67 mm
Overall length: 36.83 mm
Typical bullet: 125 gr
Typical velocity: 320 m/s
Typical energy: 420 J

Sources

Wikipedia: .360 No. 5 Rook, Wikipedia