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The 300 Weatherby Magnum X Die Mandrel Assembly unit features an expander rod and ball and a decapping pin. It’s used with The X Die Sizer to de-prime the case and expand the neck.
Prop 65WARNING: Lead - Discharging firearms in poorly ventilated areas, cleaning firearms, or handling ammunition may result in exposure to lead and other substances known to cause birth defects, reproductive harm, and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposure.