I was testing some combos in my .40Super conversion in a 1911. I had loaded some with cci and they shot good so I wanted to try some more.The cartridge runs higher psi and has a tendancy for primer flow and pierced primers(it a good indication of where the loads at,no data available). On my second loading I used Fed primers(my loading wasn't at the higher end)and most of them did pierce. By switching back to CCI it stopped. I now do use (large) rifle primers to stop flow(even cci) at higher charges.
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Last edited by dunerjeff; September 15, 2012 at 08:51 AM.