I've had my MVP LC in .308 for a couple of years now and is been fine up until recently, when i noticed some of the fired cases had a bright ring around them. At first I though this was a sign of imminent case head seperation, but then realised that it wasn't in the normal place... these rings were over half way up the case. Tonight i investigated properly and used my cheapo USB webcam / bore scope to see what was happening... i could see this: The ring closest to the camera is where the ring is on the cases... and if i lay a case on the outside of the chamber, with the rim approx level with the start of the chamber, the ring on the case is level with the edge of the recoil lug... The ring on the cases is actually a very slight raised rib, you can only just feel it with your fingernail, so that ring in the chamber is actually a small depression. So whats happening?? i've had the action out of the stock and everything feels tight.. i did wonder of the barrrel was coming loose, but no.. Any ideas..? And any thoughts on whether its still safe to shoot?? I'm supposed to be using this weekend..