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I take the particular bullet, and a fired case, and pinch the case mouth to where it will somewhat firmly hold the bullet.
Stick the bullet in the case mouth at a obviously long COL, and chamber this "dummy round". Then extract it, and measure. Do this several times and you will get a basic "to the lands" measurement for this specific bullet.
This measurement will be correct for only that bullet, and must be done for other bullets with different ogives. jd
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"We're all dummies, just in different ways." Old Okie Philosopher
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