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NOMINAL BORE READINGS

Discussion in 'Shooting Related Threads' started by jamie65, Oct 9, 2011.

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  1. jamie65

    jamie65 Member

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    Does anyone know the nominal bore values for 1979 vintage Bt-99s ?
     
  2. miketmx

    miketmx Well-Known Member

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    I owned a couple of them and they measured about .727 bore size.
     
  3. jamie65

    jamie65 Member

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    thanks miketmx
     
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