.416 Rigby

The .416 Rigby cartridge case is one of the most voluminous designed for a magazine rifle. The case was originally designed to utilize cordite strands invented in the United Kingdom as a propellant. The large case allowed the .416 Rigby to operate at what today would be considered moderate pressures, yet turn in a good performance with regard to velocity and energy. Like many of the big bore cartridges designed during the early 20th century, the .416 Rigby was intended for use in Africa and India. As cordite burnt hot and was susceptible to high chamber pressure variations dependent on ambient temperature, the relatively moderate pressure loading by today’s standards of the .416 Rigby provided a safety margin against dangerously high pressures when used in tropical regions.

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