.500 A-Square

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

Key specs

Type: Rifle
Origin: United States
Designer: Arthur Alphin
Introduced: 1976
Case type: belted, bottleneck
Bullet diameter: 12.95 mm
Case length: 73.66 mm
Overall length: 95.00 mm
Typical bullet: 600 gr
Typical velocity: 753 m/s
Typical energy: 11,019 J
Parent case: .460 Weatherby Magnum

Sources

Wikipedia: .500 A-Square, Wikipedia