Does anyone make a custom powder through expander for the Dillon 550B powder die?
I'm looking for a Dillon expander for 38 Special that is a little bit larger than the standard Dillon expander for the 38/357 set up.
My first thought was to take a 40 caliber expander and turn it down to achieve the desired diameter but than I thought that someone likely makes that expander. I'd rather just buy one.