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The S&W 442-2 is barrel marked for 38 Special +P ammunition so both standard pressure and +P loads were fired. Standard pressure, or Pmax pressure for the 38 Special is 17,000 psi, +P pressure is 18,500 psi. For the sake of context, the 357 Magnum Pmax is 35,000 psi. The numbers are neither cause for…

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