I had Lee Precision make me a .358 inch powder thru expander for a 38 S&W/short/long die, I use it for reloading 9mm as it goes deeper into the case and just opens the case nicely for .356 inch Coated/Plated/Lead bullets which in turn allows them to go in straight without swaging down the bullet and scraping off any coating or lead. I know there are other options out there that are a lot more money but really don't do it any better as I have found out from experience. The expander was beautifully machined and turn around time was quick and painless. I will do this again if I need to for any other cartridge's I reload it just works that well.