Why do we not list our cartridge COAL in CBTO of our loading data?
The reason that the CBTO is not listed in our loading data is because different bullet comparator tools often provide different measurement results from the same bullet. We encourage the measurement of CBTO rather than COAL whenever possible, as it will vary much less measuring from the bullet ogive than from bullet tip: https://bergerbullets.com/wp-content/uploads/2013/03/COAL.pdf