A Learning Experience...

[wterrell]

The position of the thread on the shaft (start thread), and the position of the thread in the receiver (start thread) is timed in relation to the shoulder of the barrel (with reference to the front sight mount) and the face of the receiver by means of a worm gear and half-nut, this operation most usually being performed on a lathe. Once this relationship is established (in relation to the relative length of the threading bar and the position of the threading tool for the barrel), mass production may begin, and there is no "hunt & peck" headspacing. It is not a hand operation or "try & fit". I agree with Viggo and apologize if I, previously, have not made myself understood on this matter.

The production of the Luger (if my reading recall is correct) was 1500 different operations. If the authors knew this, then they knew the sequence of operations, or they were giving a WAG.

If Mr. Simpson stated a sequence of operations, then he can easily give the reference.

Dwight,
I have never associated obfuscation with any harsh meaning. I was afraid that the original question was being lost, that we were clouding the issue with facts. Nothing more.