In playing with my 204, I purchased some new RCBS dies. (Should have used Redding : ) I am using Rem brass and for some reason I cannot get the resizer to give me anywhere close to the proper neck tension. I prefer .003 and am getting close to .006 tension. With the neck tension at .006 I am slightly shaving bullets. Has anyone else had this problem? My bullets measure exact at .204 and the expander ball is measuring .201 but when I resize ... I end up with a .198 diameter. Is the resizing die making the neck to small and the brass is not responding to the expander ball? If you have any ideas ... please respond.