Originally Posted By: Drew Hause
Discussed at length in The Gun and Its Development, 1907
http://books.google.com/books?id=3HMCAAAAYAAJ&pg=PA280
See p. 293-294

Here is the aforementioned book available online, you can either read it online or go to the second link, open it, then click on the .pdf version on the left hand side of the web page and when it opens, save it as an ebook.
Tim

The Gun and it's Development

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