After years of rolling my own, had my first blown primer yesterday. Pin hole between primer and case. Sooted up case, no sticky extraction. Did hit the steel at 300 though. Once fired remington brass, no signs of overpressure, and moderate load. Upon internet searching this morning, seems that winchester WLR primers are prone to this. Ive loaded thousands of them in the past but never had one fail. Will check lot numbers when i get home and see if they are in the affected lots online. Anyone ever had one of these?
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