Bulged shells on brass face after firing??, Page 2

Winchester 410-Gauge 2-½-in #4 Lead Shotgun Shells

Array of rings on brass after first firing and resizing? What's going on? : r/longrange

Why are my spent casings deformed?? (More in comments) : r/gunsmithing

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Remington Model 11 12 Ga bulge on brass