I have overloaded dozens of cartridges hundreds of times rimmed and rimless. I have had one case separate, a 10mm. It separated right in the middle. I don't re use overloaded brass.
I bought an Arisaka 6.5mm with a case separated already in it.
What does it all mean?
Separations are due to stretching from more than one event, probably repeated full length sizing and reloading.
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