the Remington 250 grain CoreLokt round is very appealing to me. I like the CoreLokt bullet a lot and their are several members here that have taken elk with it. It is a little hard to find but if you use AmmoSeek.com you can normally find it.
Myself I load a 200gr Nosler Acccubond at 2530 fps out of my 20'' chopped barrel 338MX. It has worked very well on a mule deer and an elk. I have no issue with the factory Hornady FTX ammo I just prefer a different bullet.