Mr. Bradley,
In a quick survey of the "Confederate Veteran" I found three references to casualities at Chickamauga by veterans of the 6th Georgia. G.W.R. Bell, "our loss was heavy". Curtis Green, Co. G, "our regiment suffered severely". J.W. Minnich, also Co. G, wrote that the 6th had 9 KIA and 71 WIA.
Hope this helps, R. Cofer