I loaded 100 new Starline cases of 7.62x25 about 5 yrs ago. I loaded them using Hornady XTP 90 gr. HPs. I loaded them well below MAX.
I went to the range today and shot 50 of them through a CZ-52. After tracking the brass down 20' away, I noticed all the cases had splits either in the necks or shoulders.
I also shot some S&B factory rds. After examining them, there were NO splits.
My question is, WTF is going on with Starline brass?
Here's a pic of one w/ a flashlight behind it to show split.
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