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Inconsistent primers

I have been using Winchester Large Pistol primers, fresh, in my SDB, for .45 ACP, and I have found that some 100 primer boxes have primers that jam up in the pick up tube(s) while other boxes work just fine. I don't force the primers into the tube and have 3 tubes. Any thoughts on this? I have usually found Win primers to be consistent in size and smooth edged, but perhaps things have changed.

Our experience here in checking the dimensions on various brands of primers is that the dimensional variations on most brands of primer have increased. Currently, we have found that Remington, CCI, S&B, Fiocchi primers are among the most dimensionally consistent.

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