I have gone through about 5K of these and I have 15K more. I think they work great. Your invention is nice but I just dump 1000 or 2000 in a bin and submerse a 100 card in there and move it around a bit and that works too. They're a bit bigger than American primers but thats all I have now so I just commit to the bigger size. Works great with 20/28 gauge and everything I have tried. No misfires yet. I live in warm weather.
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