Official drawings?

DENWA

January 12, 2009 02:24

Just wondering.

my Speer #12 manual show 308 win and 243 rim diameter at .457"

my hornady manual shows .473" just like the 30-06.

Is there a reason for the differences?

I thought these were regulated drawings?

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  Pearyw

  January 12, 2009 05:04

  It must be a misprint. My Speer #10 show it to be .473".

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  amamnn

  January 17, 2009 19:35

  the ANSI/SAAMI drawings indicate .473, which is not surprising since the .30-06 was the parent cartridge.

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  Tailgunner1954

  January 18, 2009 01:21

  quote:Originally posted by amamnn
  the ANSI/SAAMI drawings indicate .473, which is not surprising since the .30-06 was the parent cartridge.
  
  Actually the true parent cartridge, of both, is the 8mm/7mm Mauser family of cartrieges. Ever wonder why it's such a "odd" number? Translate it to metric, and it starts to make sense.

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