L.E Wilson Expanding Mandrel Sizing Die 30 CAL - these are £75 new 
 
The NEW Wilson Expanding Mandrel Sizing Die. This die is designed to be used on NEW brass cases to prepare the case for the seating operation.  Over the past few years L.E Wilson have seen a greater need to run new brass cases over and expanding mandrel to properly prepare them for their first firing.  New brass cases are often damaged when shipped in bulk, this die will give you a consistent neck diameter on your cases.  With correct neck tension you can expect a more consistent seating depth and shot.
Includes one mandrel.
Additional mandrels sold separately.
Cut out in die provides an easy view for making sure case aligns and setting up depth
Interchangeable Mandrels depending on caliber
Standard 7/8ths Reloading Press
Die ONLY expands neck to slightly under bullet diameter 
Stainless Parts for a Long Lasting Finish
Durable and Accurate
L.E. Wilson manufactured lock nut - thickness is .225" from inside to outermost edge .270" for height and 1.250" total width OD