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Stepped Barrel Proof Marks

Discussion in 'Maintenance & Gunsmithing' started by FAL, Mar 19, 2012.

  1. FAL

    FAL Salem Active Member

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    Who can tell me what the following barrel proof marks mean exactly?

    (crown) \ /
    BNP 7.62x51MM 20000 tons mXc
    /4\


    X = Sword crossing
    Found on the stepped barrel in my FN Mauser '98

    Thanks!!!!
     
  2. xoddah

    xoddah Sandy Or Member

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    google --- how to read swedish mauser stock disks ---
    good info, pictures and everything...
     
  3. Jamie6.5

    Jamie6.5 Western OR Well-Known Member

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    Birmingham Nitro Proof. (smokeless powder proofed) to the pressure listed.

    British gun makers/builders aren't allowed to rate their barrels/actions for max pressure. They have to be sent out to be "proofed" by a gov't approved proofing house. The mXc is the proof house that rated it.
    I think you have an extra zero or two in there though.

    http://www.phoenixinvestmentarms.com/archives/Proofmarks.pdf