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  1. The 45/70 Govt.
    2013-08-13: Re-slugged my bbl to better confirm proper boolit dia. & design. Any inaccuracies no doubt due to my handling... .451"-.452" Bore Dia. .4585"-.4590" Groove dia. near end of slug .1600" Rifling Starts from case mouth .0690" Case to first edge of chamber chamfer .5010" Nose Length...