From the photo, it looks more like your chamber may have tool marks from the chamber reamer.
Does it happen with factory rounds? Have you looked at the chamber under strong light?
Do the marks appear when you extract an unfired case too, or only d cases? Are they engraved or proud?
The scratches on the case necks can be fixed by lightly stoning the offending lug(s) a bit.
Everyone has a right to do stupid things. Unfortunately, politicians tend to abuse the privilege.