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The Mark V Magnum action was designed for maximum strength, and indeed it was billed as the world's strongest action, a title it still claims today. Regardless of country of manufacture the standards of quality, assembly, fit, finish, and accuracy have remained at the same high standard. In 1995 production was moved to the United States. Subsequently, and for many years, they were produced in Japan by Miroku. In the early years the Mark V rifles were manufactured by J. This ground breaking achievement was designed specifically for the high pressures at which the Weatherby belted magnum cartridges operated, and would elevate the Weatherby company to the status of a major player in the rifle business. Roy Weatherby introduced the Mark V Magnum bolt action rifle in 1957.
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