.20 VarTarg

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

Key specs

Type: Rifle
Origin: United States
Designer: Todd Kindler
Case type: rimless, bottleneck
Bullet diameter: 5.18 mm
Case length: 35.43 mm
Overall length: 47.12 mm
Typical bullet: 32 gr
Typical velocity: 1,211 m/s
Typical energy: 1,521 J
Parent case: .221 Remington Fireball

Sources

Wikipedia: .20 VarTarg, Wikipedia