.450/400 31/4 inch Black Powder Express

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Key specs

Type: Rifle
Origin: United Kingdom
Case type: rimmed, bottleneck
Bullet diameter: 10.29 mm
Case length: 82.55 mm
Overall length: 97.79 mm
Typical bullet: 270 gr
Typical velocity: 564 m/s
Typical energy: 2,779 J
Parent case: .450 Black Powder Express

Cartridges based on it 2

.400 Jeffery Nitro Express .450/400 Nitro Express

Sources

Wikipedia: .450/400 Black Powder Express, Wikipedia