.17 Winchester Super Magnum

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

Key specs

Type: Rimfire
Origin: United States
Designer: Winchester
Introduced: 2012
Case type: rimmed, bottleneck
Bullet diameter: 4.37 mm
Case length: 30.48 mm
Overall length: 36.58 mm
Typical bullet: 20 gr
Typical velocity: 914 m/s
Typical energy: 542 J

Sources

Wikipedia: .17 Winchester Super Magnum, Wikipedia