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I've had a few cases do that over the years, but never that many all at once. I would guess it's just cruddy or tight primer pockets. I've never had .38 do that but a few .40S&W and .223. Never noticed if it was brand specific.I ran everything through a wash with brass cleaner and then a tumble, so it was all clean.
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I'm gonna say weak primer cups. Back in the day Dad and I deprimed lot of USGI .30-06 brass. HEAVY crimp. Standard decapping pins just broke. Dad made a special decapping press out of grandpa's old bottle capper to handle them. Can't get a tighter primer pocket than that. None of the primer cups ever failed like the OP shows. Metallurgy can be done wrong even in the 21st century.