Pressure Question

Discussion in 'General Handgun Discussion' started by thornybird, Jun 5, 2007.

  1. thornybird

    thornybird New Member

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    I'm trying to understand something and am at a complete loss. If the 9mm typically has a PSI pressure of 35000 and so does the 40 S&W, why is it that the 40 is considered so much more abusive on guns than the 9mm?