This South African (circa 81) round has been chambered prior to finding this damage or blemish or whatever. I often eject a round or two at the range to monitor how they are feeding. I have never seen this type of case condition or damage. Anyone know what this might be? I'm kind of thinking it was damaged during either the storage process or while being manufactured. I have checked about 20 rounds of the stuff over the last six months and I don't feel like my rifle is causing it.