I throw out all 9mm S&B and any military brass with the "ring around the primer hole" on initial sorting of range trash brass. There is too much 9mm available to me to mess with known problems. I don't have a problem with current CCI.
A few oddballs get through and are marked with a black pen for disposal after shooting.


AFTERTHOUGHT: Have you double checked your decapping pin to be sure there is no burr or slight mushroom of the head after extensive use?

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Science plus Art