Just tried to use some "used" 6 XC dies that i bought off of the classified section about 2 months ago, and the neck sizer isn't sizing at all!!! New cases (norma) at neck dia measure .270, after firing, measure .274 i'm happy with that, but the "good condition" die set i bought used, doesnt even touch the neck walls!!! put some powder on the necks to check, come out un marked!!!! My numbers weird, or neck die screwed up? And does anybody know how Redding is on problems? Hate to believe that someone on this forum would knowingly sell junk.....rsbhunter