Straight from the Tech's mouth.....

He told me they shoot for a gap of .004-.010.

The checking procedure is they insert the .004 gage in from one side and cycle the cylinder around and whatever size gage get's pulled to the other side is the final gap spec. on that revolver.

He said it "should" be the same on both sides but if a .011 doesn't go all the way through it could be shipped out.

Told him my M69 was returned back with .010 and .005 and he said to keep and eye on it to see if the wide side gets any larger from use or just send it back for another try.