Well, there's this new barrel threading and crowning.
http://i126.photobucket.com/albums/p...ps55520fcd.jpg
Which, of course, negated all these nice data cards I just made up for when the barrel was 26" and didn't have a comp. Ah, well, back to the chrony and drawing board...
http://i126.photobucket.com/albums/p...pse5b43632.jpg