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CASE TRIMMER AND NECK TURNING


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Don't know if this is exactly what you mean but I achieve this (improved neck uniformity and case trimming) but in two steps. After annealing and FL sizing, I use a Wilson/Sinclair case trimmer like this one:

 

rs_sinclair_ultimate_case_trimmer_a.jpg

 

A micrometer gauge can be used to determine neck run-out with the case still sat in the Wilson case holder as it's easy to turn holder around (once unclamped) on the rails. If there is a batch that seems too high, The Lee Collet Neck sizer can be used which seems to bring an improvement to neck uniformity, but I don't turn the necks themselves to uniform brass thickness. If it varies by much, the brass can simply be batched.

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