I remember the Federal Ordnance broom mods. I have only seen pictures, none in the flesh.
The Luger looks like a three piecer. Can you say concentric? To do it nicely, lots of time in alignments. Looks like the taper got away a little, tis mighty easy to do. A fair amount of work involved, like one said, a labor of love basically.
the 9mmx19 in SAAMI is about 35Kpsi, so one has run that thru your own conscience for such a project.
This work reminds me of sleeving a single shot rifle, the best smiths will have no visible lines of the insert or plugs. Anyone can drill or ream the barrel, but the final fit separates the skill levels. I hear slight compression is used in certain areas to hide the lines, heard that from the big boys.
Always wondered how things would look if one did such a project and the taper was off just slightly.......then took a form tool to the front sight bulge to align without the jump. Probably cannot do much mini contouring or it looks worse than it was.
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