[Unclenick]

May I suggest you measure the offset of the edge of the notch closest to a chamber wall and then figure out how thin it will make the metal between itself and the chamber. A hoop stress analyses will then show how much pressure the resulting chamber can take. Jack Belk pointed out a Chiappa Rhino 44 Mag that had .045" between the chamber and the bottom of the locking bolt slot that blew out and cut off a trigger finger. So, even though you will be at much lower pressures, it's not a consideration to simply ignore without checking. That's why you were wise to ask for a drawing to see what the original value was. I'm just sorry nobody had one of the cylinder to offer.