I shot PPC for several years, I had a quantity of brass that I reloaded over and over, I just inspected the cases for cracks etc, when I would find something I would throw it out, I believe some of those cases were reloaded 50 times or more, with no problems. Keep in mind these were mild target loads.
Dogjaw mentioned having a problem with splits on Starline brass, Starline is considered to be some of the best brass you can buy. The only thing that might fit his problem is if the cases were nickel, nickel cases can't be reloaded much, they split very easily, it is believed the nickel plating process weakens the brass and makes it brittle.
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John
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