dirty powder

  1. Big-bore-bob

    Hp38 barrel fouling 45 acp

    Hello all, I'm having issues with fouling in my 45 acp barrels using hp38, I have a hk usp 45, and a sig sauer 1911. My load is 5.5gr hp38, cci 300 primers, rmr 230gr fmj bullet, new starline brass, coal 1.260, my average fps is 824. I have some sort of fouling in the first 1/3 of the barrel...
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