The 6.5 CM (Hornady's ELD-X) is a 143 gr bullet traveling at around 2630ish fps out of a 22-24" barrel. It's about like 20+ other rounds I can name that do about the same thing at 0-200 yards
I don't know if Steve was dumb lucky or evil genius but he hit a cord with the American public's fascination with single person marksmanship and snipers. The 6.5 CM doesn't start to do anything real special until after 600 yards and which point the longer better BC bullets start to pull away from some of the older standards. I could care less about drop. But it does manage drift well.
Most people don't shoot that often. Most don't have ranges over 200 yards to practice at (let alone 1000 yard). Most don't go hunting. The few that do don't shoot anything for 'reasons'. Those very few, that do harvest game, do so at ranges under 200 yards. Nothing the 6.5 CM marketing is selling is needed to cover the prior 5 sentences. But the American public's need to fantasize about 'Enemy at the Gate Part II - Deer Season in the Kickapoo' seems to be making this a very popular round.
The stroke of genius was being able to get anyone who manufactured a rifle, from the $399 package special to the $3999 custom rifle, to chamber it in 6.5 CM. All it took was the gun rags to proclaim it a long distance death pill. Add in a few long range internet video kills on animals nobody should be using 143 gr 2630ish fps rounds on and we have threads like this.
It's a great round, that can be found in any store that carries ammo. It's very light on recoil. Responds well to suppressers. If I have a 'beef' with it, it's that the 143 gr factory load would be better served for the 200 yard and under crowd, if it was a 120-130 grain bullet traveling 150ish fps faster.
I have taken quite a few different species with it at nothing over 300 yards. It's 'ok', but it's not devastating by any means.
If I was a first time deer hunter, getting my first rifle, I'd probably choose one. Why not?