[lugerholsterrepair]

Dan,

"If the chamber was tighter, then the slug would have been squeezed down to match. There is just no doubt about the process."

From your discription I have a doubt about the process even if you don't!


Have you considered the thickness of the brass cartridge casing in the chamber? Pushing a slug down the bore tells you nothing about the diameter of the chamber. The bore will be much smaller than the chamber because the chamber must accomodate the brass casing while the bore does not.
Try this...Load up a dummy round with the bullet diameter you desire and see if it will chamber , cycle and extract. If it does not stick in the chamber and the bolt goes fully forward it is possible you would be safe. I suspect that when you load this up there will be a considerable bulge in the case mouth. This could also lead to head spacing problems. The 9MM Luger is a tapered cartridge and ruining this taper could affect headspace.
I could be totally off base here but I know this much, I still have two eyes and all my fingers. Jerry Burney