.500/450 No 1 Black Powder Express

The .500/450 No 1 Black Powder Express, known in its day as the .500/450 No 1 Express, was a centerfire rifle cartridge developed by Westley Richards and introduced in the late 1870s.

.500/450 No 1 Black Powder Express

The .500/450 No 1 Black Powder Express, known in its day as the .500/450 No 1 Express, was a centerfire rifle cartridge developed by Westley Richards and introduced in the late 1870s.