I've never seen a 6.5 Creedmoor, but I've taken a good number of elk with various 6.5s (I think 8 more with the 6.5 x 55 since last replying to this thread) from about 50 to 450 yards. Quartered and packed at least another half dozen taken with the 6.5 x 55. I've harvested elk with cartridges up to the 375 Ruger, among them magnums, pistol rounds, and big lever rounds. I do not find 6.5s lacking in the elk killing department. I see "elk hunters" suffering a number of issues and shortcomings, being "under-headstamped" is rarely one of them.
