I have a 6xc with about 800 rounds down the tube. I bought some factory tubb 115 DTAC ammo just to have some brass and while i shot it I noticed it was a moderate jam into the lands, maybe .010" or so. Enough to not extract the round without filling the chamber with powder. I actually got my backorder of brass before i shot all this up, i have about 25 of the 50 left, so i had stopped using them and loaded my own ammo again and shot about 120 rounds and now i went to shoot up the rest of the factory and it does not touch the lands anymore. Is this possible to have eroded that much in only 100 or so rounds? Maybe it wasnt .010" into the lands but still, should it erode that quick?