Stamping metal

Discussion in 'General Shotgun Discussion' started by coopertrooper, Nov 29, 2013.

  1. coopertrooper

    coopertrooper New Member

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    Got to looking at my 1400 and there is a stamp on it, I don't if it's a production stamp or what, any kind if help would be highly appreciated, and if it is a stamp how old is it??

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  2. Sniper03

    Sniper03 Supporting Member Supporter

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    trooper,

    The PW in the Circle shown in your picture is a Winchester Proof Mark.
    The purpose of a "Proof Mark" is to indicate that the part in question, in this case your barrel, has been tested with a Proof Load and is safe to fire with the designated ammunition and loads for the weapon.

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  3. c3shooter

    c3shooter Administrator Staff Member

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    Sniper nailed it. Among European nations, there are Government proof houses where all guns must be tested, such as the Birmingham proof House in Britain, the Liège Proof House in Belgium, etc. Here in the US, there is no govt proof testing, but major makers do their own. PW (or WP) for Winchester Proof, JM for Marlin, etc.