One place to check out wear,among others
 

I started to compare the wear marks on my collection! The military have destinct wear and commercial not as much. My 1937 Kreighoff on the left show none! I wonder how any cycles it takes to leave an impression? The right is my 1920 Carbine which was barely used not by me and vividly show friction wear! Its probobly a good test for a reblue!

Hi,

If the ammo being used is within DWM's WWI military specs., and the recoil spring is within original manufacture specs., very few ware marks will be visible on just about any Luger (123 grain bullet at 1,076 fps)

Sieger