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Old 04-13-2012, 08:46 PM
montdoug montdoug is offline
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Join Date: Sep 2006
Location: Bozeman Montana
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Fire-form the cases then neck size only till the cases get sticky, (if indeed they do?). I have one batch of 50 .17 Ackley Hornet cases that haven't needed the shoulders bumped yet with 8 firings. After forming if you neck size only the rim thickness (within reason of course) is immaterial IMO.
Last week we had a thread on "headspace" and I mic'd 10 case rim's out of one MTM box of 50 .17 AH cases. Even in that small sampling they varied by .005 but the same batch of cases that have been neck sized only is shooting bugholes.
I'd consider turning rims a huge waste of time but then I weight segregate cases and a lotta other stuff that others think is a waste of time.
If you decide to do it be sure to shoot before and after groups to see how much actual effect the process has and post your results for us .
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