Got a savage 12 FV .223 a little bit ago and some Lapua 69 gr ammo for it. Didn't notice it til 2nd range trip but my gun is leaving rings around the cases. It did it to the cheap winchester ammo too. I can't get a very good pic of it, but towards bottom of case is like 6-7 very light rings i can BARELY feel, and a heavier one towards middle of case, but it doesn't over lap itself. I can feel that with my fingernail. I checked my cases and the very first round out of the gun has it too. Any ideas what it could be? Can i still use the Lapua brass to reload?

