Could anyone tell me the exact steps I need to take and the dies I need to use to form 6XC cases from .243 win. brass . I would like to end up with thick necks that can be turned to give me a diameter of .273 on a loaded round . My chamber neck measures .2745 . It seems that if I use 22-250, the best I will be able to come up with will be .270 using Nosler brass . I haven't formed cases before and I'm not sure of the exact process. Thanks for any info. GBR