I remeasured - at home so it might not be the most accurate- and got 130 c to c and 150ish from outside to outside. When I sit on my B17 it seems like my sit bones are just inside the metal plated area. Since my measurements and my turbomatic seem to be telling a different story, maybe I'll try out a B68 and a Swallow ... (horray for good return policies)

Unfortunately I'm long past the exchange period for this saddle.