M Type Expander Plugs

"M" for Mandrel, M plugs are used to expand and bell the case mouth prior to bullet seating. They are intended to be used in our expander die bodies, but will also function in any die with the appropriate top thread and die length.

• Available in any diameter, but the top thread size is dependant upon the diameter of the plug.
• Available in two lengths, short for rifle and long for pistol.
• Optimum size is .002" under bullet diameter for jacketed bullets and .001" under for lead bullets.

See M Plug Part Numbers for more details.