Steve, if yours is right, it would be the first ever. I'll bet if you drop a small washer in the arbor hole and install the barrel assy, it will install (which means your arbor isn't bottoming out ).
Or, if you tap the wedge in as far as you can, it will lock up the cylinder (the wedge isn't a cylinder clearance setter !!)
Either way, it's too short (they all are) and it's an easy fix.
Expat, that isn't a reliable test to check for a short arbor (see above ).
Jmar, chewed up wedges, stretched arbors, distorted wedge slots , not having the same revolver each time you reassemble it . . . . . or even shot to shot.
The arbor should bottom out in the barrel assy so the revolver will shoot as a sold frame revolver, be a consistent shooter and not destroy itself. This is what allows the brassers to " shoot loose"!!
Mike
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