Fooling around one day, I put a recess in the center of the flat end of the dowel meant for seating a primer - got the idea from the old " Lee " reloading tool. That, and the small pin sticking out of the dowel for depriming is small enough to push out just the center of a modern shotgun primer. You'll end up with what looks like a pistol or rifle primer on the bench. Makes me wonder if that's what shotgun primers are with a ring attached.
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Paul Harm
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