Thank you everyone for the help. It sounds like I just need to order a neck sizing die to do this the right way. This now brings up a whole new issue. From the research I have been doing, neck sizing dies use various bushings that you can swap out to achieve the desired neck size, or tension. Am I correct on this so far? Also, I have read about people shaving the inside and outside of the case neck to achieve various case neck dimensions. All this stuff is a bit beyond my abilities at the time. Can I neck size without doing all this fancy case prep? I always tumble, trim (if required) chamfer, and de-burr my brass as part of my normal case prep routine. Should I give up on trying to gain accuracy by neck sizing and simply stick to full length sizing?
