.577 Black Powder Express (23/4-inch)

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

Key specs

Type: Rifle
Typical bullet: 520 gr
Typical velocity: 526 m/s
Typical energy: 4,664 J

Sources

Wikipedia: .577 Black Powder Express, Wikipedia

.577 Black Powder Express (23/4-inch) · Armory Atlas