Mark, thank you for the post. Really great pictures.
It is up to Mark as to how much of this guns lineage, he wishes to share.
What I can say for the sake of clarity is that the forearm radius is due to a prior attempted repair to the ejectors. We could not replace the ground out metal. The reciever had been buffed and blued atleast twice over the life of the gun.
When done properly, case hardening absolutely can not cause warpage. The Parker case hardening process minutely shrinks the metal due to surface density. New parkers required two fittings of parts due to this shrinkage, as noted in the book. Recasing older recievers usually will desirably tighten up looseness due to wear.
Brad
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