Quote:
Originally Posted by Rule3
Brass TRIM length has nothing to due with COL UNLESS you are setting to a specific point in a crimp groove or cannelure.
COL is not the sane as SET Back,
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I completely agree; however, this cartridge headspaces on the case mouth, and if the loader doesn't mind a few thousandths tolerance here, why blueprint the cartridge at all. Just a generic statement, and the OP satisfied my curiosity.