Luger stovepiping issues.

[DonVoigt]

-The ejector does not have a spring; it IS a spring. The flat blade that protrudes into the bolt may
be damaged.
-The extractor does have a spring, and the spring or condition of the extractor could be a contributing factor
-The ding usually has nothing to do with a stovepipe jam, such are usually a result of the magazine or of weak ammo or too strong a recoil spring; resulting in incomplete recoil.
- brass shaving is not normal, and could result from several issues - from magazine to barrel
ramp cut and probably others
-the doubling, is likely not related to the stove pipe; but due to minimal contact at the sear interface, or a weak sear bar spring
-try other ammo than the WW white box, it is normally "good"; but not necessarily for all lugers.
I'd try some 124 grain ammo and see if your result is different- but AFTER correcting the doubling!

If you have more than one luger, try swapping the uppers from one frame to the other and see if anything changes.

This could be a long journey, as you have more than one issue causing different problems.