The .338 WBY RPM is built off the Weatherby 6.5 RPM case, necked up to accommodate a .338 caliber bullet. Engineered to maximize the performance of Weatherby's lightweight 6-lug action, it delivers magnu level ballistics in a rifle weighing just 5 lb. With its large body diameter, minimal taper and 35 deg shoulder, the .338 RPM offers increased case capacity for higher velocities, making it a powerhouse for serious hunters and long range shooters.

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