Thanks Chormeed for the pics of the deformation of your stainless luger ramps. I read about this problem in a different post and was wondering what it looked like.
I also have a Mitchell SS luger,that I have owned almost since new. Have shot a bunch of rounds thru it with no deformation.
I try to use the least powerful ammo that still functions the action. Since I only shoot at paper,stopping power is not a issue!

What do you use for lubrication? I have had very good luck with the Tetra grease. It seems to mitigate the galling problem that stainless has when sliding over itself.
As a aside,I purchased new in 1977 a 45 ACP AMT Hardballer.Its a 1911 clone made of a early type of stainless steel. It was the first production stainless 45. The Tetra works great on that gun as well,and it has had thousands of round thru it. Of course,I also installed a buffer and a stronger recoil spring to keep the slide from cracking!
Bob