I opened the "click for photos", thinking it was a link to photos of your weird cases, window in your posting and was directed to a site called, "pcspeeduppro" then my computer malware detected a threat from this site and blocked it.
What does it look like after it is fired? Does the groove flatten out?
What does it look like after it is fired? Does the groove flatten out?
Look at the photo again, those are fired cases.