Quote:
After sizing and trimming the brass is divided into two containers. One for 0 - .005 and one for .006 - .001 (going to assume you ment .006-.010) case neck concentricity.
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That sure seems like a lot of runout on a case alone sized or just fired (assuming they are not obviously bent or dented), what do they measure before you size, for them to come out so bad?
If running them through your die makes them worse, take a look at your process. First suggestion would be to lube inside the neck and a different die right after that.
I just grabbed 10 random cases of .223 cases from a batch of around 3000 cases I prepped yesterday on a 650 with Dillon dies (carbide expander), the worst one was under .001" TIR. Grabbed 3 more, lubed them up and ran them through a Lee single stage with an ancient Lee die and the worst one of them was still well under .002" TIR.