Quote:
Originally Posted by snowman
...case 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).
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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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