I don't remember who it was on here that posted that a fellow could send RCBS a sample of three boolits, and they would custom make you a seating stem. Well whomever it was THANK YOU SIR! I was having problems with my .40 cal seating and the boolit getting cocked to one side ever so slightly and shaving a smidgen of lead (or powder coat). I know most wouldn't bother but it rankled me to no end..... I contacted rcbs, got the shipping info, and off it went. It took about a month but I got my seating stem back today. My sample boolit was a NOE 175 gr round nose. I just got in from loading about 100, and not a single one had a shaved side. I'm tickled pink!