.45 Mars Long

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

Key specs

Type: Pistol
Origin: United Kingdom
Introduced: 1899
Case type: rimless, straight
Bullet diameter: 11.40 mm
Case length: 27.76 mm
Overall length: 35.66 mm
Typical bullet: 220 gr
Typical velocity: 366 m/s
Typical energy: 949 J

Sources

Wikipedia: .45 Mars Long, Wikipedia