Re: Nervous
Looking at the pics, this has nothing to do with anyone's reloading, and annealing isn't going to correct the problem. This is a factory defect, and shouldn't have even made it past their QC inspectors. It's caused by brass that's a bit on the hard size, combined with a relatively severe necking operation. Sharp shoulders and smaller bores exacerbate the problem, but that's what it is. We see the same thing most frequently in two of our cases as well, the 6.5x284 and the 6mm BR. Both have rather sharp shoulders and require a lot of metal movement in creating the shoulder and neck during the final forming step. If the brass is too hard, it tends to "fold" rather than flow, as it should, and the result is what looks to be a crack. It's not; it's a fold or crease.
If you ever find anything like this in our brass, let me know and we'll replace it. This kind of stuff should be caught at final QC, but sometimes defects do get through. I don't know what their policy is, but if they don't replace it, it's a straight cull. Toss it into the scrap brass can and write it off.