You can read or download a copy of the 1907 US War Department, Annual Report of the Secretary of War, Volume 6, that includes the Appendix detailing the results of the Chief of Ordinance testing of the Colt, Luger and other pistols.
It's been made available by Google books for online reading at:
http://books.google.com/books?id=QAQ...age&q=&f=false
You can also download a PDF copy of the book.
The Appendix discussing the Pistol Tests begins on page 83 of the online document and page 94 of the PDF.
Marc