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  1. Reloading
    I just came cross this article online at Why is the 165gr .40S&W better than the 180gr???? - AR15.Com Archive. THE CASE OF THE CASES A 10mm brass case is approximately 0.992" long, while new .40 brass is only 0.850" long; the difference is 0.142 inches. Since the size of the 180gr bullet remains...
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