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I only full length size my military calibers. Everything else gets neck sized only. You'll still need a full length sizing die though for the odd time your shoulder gets blown out and cannot be bumped back with a neck sizer. The neck sized rounds don't usually have the same degree of run-out as experienced with full length sizing dies. Even better yet if you can eliminate the expander unit in the die. I use mostly Wilson straighgt line dies to minimize the run-out, and it works well. It's all part of a larger package that goes into reducing a lack of concentricity. Best wishes.
Cal - Montreal
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