!911 original chamber dimensions

v35

August 03, 2016 09:47

Any 1911 aficionados have original 45 auto chamber dimensions.
They are supposed to be in the 1918 " manual of the automatic pistol caliber 45 model of 1911".
They differ from today's SAAMI specs.

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  v35

  August 03, 2016 10:49

  That dwg shows differences between 1911A1 and National Match barrels. It shows only the .474 chamber dia at front and no headspace dimension.
  Is there another dwg giving chamber detailed dims or chamber taper?
  The earlier 1918 manual is supposed to give original chamber dimensioned drawings.

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  perry shooter

  August 03, 2016 17:15

  Before 1908 the 45acp cartridge had a very narrow Extractor grove and some ammo only 200 Grain bullet after 1908 the groove is wider and military load of 230 grain bullet I know many people have a sizer die that roll the case to size so It is my belief There is No taper in the diameter on most factory cases

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  v35

  August 03, 2016 19:20

  A dimensioned early chamber is what I need showing diameters and chamber taper.
  I have early ammo from 1912, 1918 and 1933.

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