Gun Parts Corp (Numrich) made their own Luger barrels. The problem with them is/was varying degrees of quality control. I have heard many stories of improperly indexed front sight bases and extractor cuts...
Rick if you do not have my Blueprint CD it might be helpful...
Regarding the shape of the tooling, after studying the shape and angles involved, I think the extractor cut could be successfully accomplished by properly grinding the shape on an appropriately sized end mill. The cut could be made in any mill with the barrel (properly indexed) held at the correct angle in a milling vise.
Grinding the tool should not be that difficult because all we are doing is creating appropriate clearance for the extractor... resharpening the modified end mill to cut the groove is the most difficult part, but end mills this size are not that expensive to begin with, and you could probably find a couple of dull end mills the right size at a local machine shop for small change... then you can experiment to creat the right tool...
Once created, the right tool would last a very long time if used in small passes until you reach the appropriate depth.
Good Luck and let us know how you make out.
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regards, -John S
"...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..."
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