If you feel the expanding pin or mandrel is creating too large a case mouth, the pins can be easily reduced in size by putting the pin in an electric hand drill and sanding the pin down with 320 grit paper. It probably will only need to be reduced .001 -.002”.
We will reduce the pin as per your specification
Custom undersize Full Length Sizing Die EZ X Expander: http://leeprecision.com/custom-undersized-ez-x-expander.html
Custom underszie Collet Necksizing Die Mandrel: http://leeprecision.com/custom-undersized-mandrel.html
