Was out shooting today and noticed that one of my cases had split at the neck. I know for a fact that the ones I were shooting today were only once fired so this case has only been fired twice now. I load at the very low end and at the OAL suggested so is this just a fluke with just twice fired? I thought I'd at least get 5 reloads out of them. BTW, this is the first time this has happened with these cases and I have reloaded and shot over 1000 of them.

