ar big bore

  1. adcoch1

    Optimum loads for 458 socom

    Hello everyone, I finally shot my 458 socom for the first time the other day and had a few minor issues to discuss. The first was a minor feed issue from using a bone stock pmag, which I will mod before trying again, but the big question I have is about loads. I ran 10 rounds of IMR4198 at 35...
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