.....and we can add to the fact on a few of the calibers, of 'old model' cylinders, there was a "firing pin" groove machined around the rear from chamber to chamber.
Yes, after around 2005 with the making of the anniversary flatops and other down sized frame sizes of Blackhawks (oh yes, and the Vaquero's, "New" and old ( original) this opened up a whole new catagory of just what size is each of these NEWER, NEW MODEL, guns as to frames as well as cylinders, and yes obviously they have had to redo ( reconfigure) the ratchets for the various guns ala 5,6,7 or 8 and even 10 shot capacity ......
hence my replay to ONLY the old models versus the "new" models of 1973 8) :roll: :wink: