CCI would be one of the "hardest" primers I believe. I wouldn't think the primer you are using would matter though if the gun is OEM. Perhaps there has been a minor change somewhere with respect to case re-sizing, casing length or OAL?? Strange
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 03-02-2020 at 09:04 PM.
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