http://www.ballisticstudies.com/Knowledge+Base/6.5x55.html has articles on several calibers, including a few 6.5mm as used for hunting. Discussions of factory ammunition and hand loads. Also, discussions of the origins of cartridges. The article in the link even has info on 6.5x54 MS and 6.5x52 Carcano, although these calibers do not have separate articles. 6.5 Creedmoor is not included, although it could be in the works. 6.5x47 also not covered.
Discusses available bullets and how they perform on game.
Hand loaders probably get the most from the various 6.5mm's. Creedmoor target ammunition seems as if it would give full performance, if the A-Max target bullet is acceptable for hunting.
