I had a partial case head separation using a 1.8oz buffer

[DeNinny]

So I'm a Starline and Hornady brass user, and if I found three kaboom threads on a reloading forum with either of them as a commonality, I would definitely take more caution with my own brass and my practices with said brass because of it. I would check it for the same exact failure signs as shared throughout this thread. Look closely for that belt or line. If there's anything I'm learning from this thread, is that the belt/line phenomena is simply another indication of high pressure.