.366 TKM

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

Key specs

Type: Rifle
Origin: Russia
Introduced: 2014
Case type: tapered
Case length: 37.50 mm
Typical bullet: 100.3 gr
Typical velocity: 610 m/s
Typical energy: 1,209 J

Sources

Wikipedia (ru): .366 TKM, Wikipedia