I'm gonna stop using Winchester .357 brass. For some reason, they tend to neatly split a bit over a centimetre below the case mouth, sometimes only after a couple of loads:
I should add this only happens with Winchesters! When they're about to split, they usually buckle on the press as I'm trying to crimp. At the same spot. I thought Winchester made a quality product?
Case splitting at the mouth I can understand, that's where all the bellin' and the crimpin' goes on, but why there? The only explanation I can think of is that they purposefully manufacture a weakness in that spot so that, when the case separates, at least it doesn't do so at the head.
Am I doing something wrong? Is Winchester? I should add that I do inspect the inside of the cases with a bent and sharpened paperclip. Sometimes there are signs of impending separation, others times there aren't. I've yet to notice any adverse effect of the case separating at that particular location (I don't notice anything while shooting, only when I eject the cases).
Any info appreciated, thanks.

I should add this only happens with Winchesters! When they're about to split, they usually buckle on the press as I'm trying to crimp. At the same spot. I thought Winchester made a quality product?
Case splitting at the mouth I can understand, that's where all the bellin' and the crimpin' goes on, but why there? The only explanation I can think of is that they purposefully manufacture a weakness in that spot so that, when the case separates, at least it doesn't do so at the head.
Am I doing something wrong? Is Winchester? I should add that I do inspect the inside of the cases with a bent and sharpened paperclip. Sometimes there are signs of impending separation, others times there aren't. I've yet to notice any adverse effect of the case separating at that particular location (I don't notice anything while shooting, only when I eject the cases).
Any info appreciated, thanks.