Only Hornady makes ammo and brass for the 6.5 Creedmoor so that fact is a big red flag for the possibility of the cartridge ending up the way of the dinosaurs in a few years.
Look at a couple of new cartridges that Hornady has introduced in the past several years 30 TC, 17 MachII...I doubt these two will survive the next decade.
The 6.5 Creedmoor may become much more popular down the road but the lack of broad support from the various ammunition makers right now would keep me from endorsing it if I did not reload ammunition.
For long range shooting, what is wrong with the popular and widely available .308, 30'06, .270, .243, 7 mm-08, or .223? Yes, the 6.5 Creedmoor and 260 Rem have some advantages (less recoil, flatter trajectories) but the ammunition costs are a bit pricey if you dont reload and there is the danger of possessing a rifle with hard to find ammunition down the road.
For example, I inherited a .303 British Enfield sporter. Despite millions of .303 rifles made by the British empire, it is difficulty to find inexpensive quality ammunition for that rifle since the .303 was phased out of active British military service decades ago. If I didn't reload, I would be stuck with overpriced ammuntion from Winchester, junk ammunition (terrible accuracy) from Prvi Partisan, or hard to find corrosive surplus.
Shooting factory centerfire ammunition outside what is commonly available can get really expensive quickly. Of course if you reload, you can shoot whatever you want since the component costs are not that much different between calibers.
