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Old 09-09-2021, 11:24 AM
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BLUEDOT37 BLUEDOT37 is offline
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Originally Posted by snowman View Post length, and all are shorter than the standard length given in the reloading manuals of 1.280(from .009 to .017 shorter in their fired condition).
Fired cases are shorter because the case has expanded & the case walls are bowed out.

Once you size them, & straighten the case walls out, the change in the measured length is proportionally longer to the difference which varies with the load's pressure & the chamber it was fired in.

Size the cases first, then trim them.

If needed, reduce the diameter of your trimmer's pilot to fit the sized case.

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