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Thread: New to me BSW trainer

  1. #11
    Junior Member
    Join Date
    Dec 2016
    Location
    Ohio
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    27

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    Someone will correct me if I am wrong, but my understanding is that the 5.3 is a carryover of the older gauge markings.

    If you measured the bore as .210" , that converts to 5.33mm. That means a 5.3 gauge will fit, but a 5.4 gauge will not.

    Some of the gauge numbers can get awfully troublesome, especially working with less common variants and smaller gunmakers.

  2. #12
    Senior Member mauser202's Avatar
    Join Date
    Feb 2010
    Location
    Pa
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    888

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    Nice one! I have 160084

  3. #13
    Senior Member KKW22cal's Avatar
    Join Date
    Dec 2013
    Location
    United States
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    Mine is 158427.

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