I think you've transposed a number... or gotten the definitions of the two measurements youre descibing mixed up a bit. Your first measurement makes sense; the second does not. See below for description and pictures of measurement.
Base to Ogive:
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COAL
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Base to ogive refers to base of cartridge to ogive of bullet. For that, while your measurement of 1.766 seems close, no two measurements with different tools will necessarily be the same because the diameter of the ogive measurement tools may be different. Also each lot of bullets can have slightly different variations that cause COAL to be longer or shorter even for same base to Ogive measurement.
COAL is "Cartridge OverAll Length" which is the entire length of round (base to tip of bullet) and the word "ogive" should not be referenced as that would be "base to ogive" (your first measurement.).
For reference, 88 ELDM's in my chamber is touching lands measure as follows:
Base to Ogive (Touching lands): 1.784"
Corresponding COAL loaded to touch lands: 2.337"
My loaded rounds are B2O: 1.718" and COAL 2.271"; -.066" from lands a.k.a "jump".
Note: my barrel has 1500+ rounds through it and has grown forward about .010" since new.