Your gonna get a lot of opinions but if you wanna Elk hunt I would go 300WM as stated on other threads ammo everywhere and a lot of choices, im kinda of surprised whoever told you to get a 6.5 creed for elk. Will it kill one sure it will but in my opinion the 300WM is a better option than the creed. As far as brakes im not a fan of radials because if you lay down to shoot it throws crap in you face. do some research and decide for yourself if you like a blended one with the profile of your barrel or a stepped one it may depend on the dia. of your barrel which style you can go with.
Sherm you are 100% correct. This is going to be a rant, but I'm just sick of the CM craziness, or the cartridge de-jour madness. New calibers are always subject to "be al - best all" by those who have them and seem to want support for their choice by selling others on it too. Yes, the military is high on the 6.5 CM. Yes, it has great BC. Yes, it has a place in hunting. Yes, they will kill people. People are generally easier than Elk or moose or bear.
The 6.5 craze is like a pyramid scheme. I got one so I need to get all my friends in the deal too. A 6.5 will for certain kill an Elk. So will a 22 rim fire or a 22-250 or a .223. None however are appropriate for the job. The 6.5 CM numbers look great but its still a .264" - 140 grain bullet v the .308"-200 grain bullet. Targets are not generally effected by time of flight or inadequate mass or an imperfect shot. And target don't usually move. The trick is to deliver that power with a less than perfect shot. And for that, bigger is ALWAYS better. The fact that a creedmore will kill an elk is not the question. A person can gut shoot an elephant with one and likley kill it. When we hunt there is a life at the end of the rainbow. We all owe that life the respect to harvest it as quickly and painlessly as possible. Always shoot enough gun. I generally shoot more than enough. Of course I'm not interested in being fashionable. I have several 6.5s. Would not hunt much more than whitetale or pigs with any of them, given the option of using a good 30 cal or larger.
Want to shoot 1/2 MOA @ 1000 yards do that. The odds 95% of mountain weight rifles will put 5 in 5" at 1000 are slim. Want to hunt, use enough gun to kill with even a marginal shot.
The 300 WSM is the right cartridge for elk at all reasonable distances.
2000ftlb@500yds. 1500ftlb@1000yds for both. The 6.5 will or may pass thru but the 30 call will break bone and impart more shock.
Hit Bone with a 6.5 on a 700+ lb animal at 600-800 yards and good luck. Guy wants to shoot 1000-1500 yards and also stop elk in its tracks at 700, buy a 300UM, 30-378, 338UM, 338 Lapua. Whatever a 140 grain 6.5 anything going 2700ft/sec will do, a 200 grain 30 cal going 2700ft/sec will do better.
There is a reason they make soooo many different cartridges and coincidentally throughout history, as animals got bigger strangley so did bullet diameter.