Kirk, I've had absolutely nothing but the best results with Starline brass. It's premium stuff in every batch that I've seen.
Before we condemn the brass, I think I'd suspect something else. Maybe that lot of powder is a bit fast (lot variation seems to be fairly common with Accurate powders), or perhaps the rear of that gun's chamber is a bit loose. I can think of a half-dozen things that may have peaked the pressure in some of your loads.
Did you offer to send some of the cases back to Starline for testing?
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