Quote:
Originally Posted by Brad Bachelder
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
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I was wondering that also, because the edge of the receiver
looked like it might have been polished. You're dead on regarding possible shrinkage. Anytime steel is taken above the lower critical temperature, grain structure is further refined. I sectioned loads of test specimens in the metalography lab and did photomicrographs in order to look at the grain structure. This can work for the gunsmith, and also against him, as internal dimensions can increase too, as I discovered one time re casing a Winchester High Wall receiver. To compensate for it, I had to build up the falling block and remachine it.