Even better, from the lips of Mr. Coburn, the chief had been using the Savage 99 in .300 Savage for a number of years. He doesn't say the year but it must have been after 1919 if the .300 wasn't introduced until 1920. He does say the Chief approached Savage Arms, does not identify Arthur. Also sounds to me like he said Lame Bear, not Deer, then again he's the CEO, not the historian. The Accurate Shooter site presents the article to show a pretty gun, not as an historical reference on details either.
http://www.americanrifleman.org/articles/2010/10/5/history-of-savage-arms-and-the-savage-110/
