.275 No 2 Magnum

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

Key specs

Type: Rifle
Origin: United Kingdom
Designer: John Rigby & Company
Introduced: 1927
Case type: rimmed, bottleneck
Bullet diameter: 7.21 mm
Case length: 63.50 mm
Overall length: 82.80 mm
Typical bullet: 140 gr
Typical velocity: 815 m/s
Typical energy: 3,023 J
Parent case: .375 Flanged Nitro Express

Sources

Wikipedia: .275 No 2 Magnum, Wikipedia