Pressure Question

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

  1. thornybird

    thornybird Guest

    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?