To eliminate deforming the base and shaving lead off the sides of your lead rifle bullets during seating. RCBS strongly recommends using our Neck Expander Die. In one step, the neck expander die expands the neck and slightly flares the case mouth of your bottle neck cases. These plugs are for use in the body die giving you the flexibility to resize several different calibers.

Item sold is only the expander plug. Requires purchase of seperate die body.