metal Lathe work

[John Sabato]

Alanint is correct that this roller solution will only work for a barrel with a straight (no taper dimension)... While I am sure a tool could be designed that would work on a taper, it would not be a hand held device.

The rollers on such a tool would have to float longitudinally (adjust themselves) to the taper of the barrel to prevent galling the exterior dimensions and at the same time be able to be held stationary while they accomplished their task. The natural tendency of the tool would be to walk with the taper as the tool was tightened. This movement would have to be prevented, and the rollers would have to be longer in length than overall length of the bulged section of the barrel in order to do a reasonably good job. In this particular case, a tool such as that which was described by Postino just might work, because if memory serves me correctly, this is not a tapered barrel? Can anyone confirm this, because I don't own one of these pistols. I personally have always thought that they were pretty ugly, but then I am a Luger enthusiast, and pretty much all other pistols are ugly!

This process has been successfully used to reshape bulged shotgun barrels using a mandrel inside the barrel to prevent collapse during the rolling... In this case a mandrel or rod that was exactly the land diameter would be used to prevent the reshaping of the barrel from going too far. This would be very similar to how hammer forged barrels are made in the first place. We aren;t talking about a great deal of displacement of metal here, cause if we were, the repair would not even be feasible.

The key to being able to effect this repair is whether or not the barrel is too bulged to be repaired in the first place.

FNorm, the pistol is described as a 1914/34 (Mauser?) which would be .32 ACP, and not 9mm.

Since Jim is already talking about rebluing the gun, It is likely not a collectible, and I believe that he just wants it to be safely functional.

I think the easiest and probably the most inexpensive course of action would be to obtain a used replacement barrel and be done with it.