I've had really good luck with the ELD-X only. Not a lot of copper fouling that I see and they haven't exploded until they hit the target. YMMVI won't get into the dirty details of every reason but I despise hornady projectiles. In short, the eld jackets are hot garbage. They copper foul in top shelf barrels that exhibit no coppering with ANY J4 jacketed bullets, I've personally blown up a LOT of hornady bullets with witnesses and I've been present for many, many, more hornady bullets blowing up (in midair, not in tissue).
More related to OP, of the several guys I know that shoot elk regularly (two were guides), only ONE will use a hornady bullet and it is over 200gr and running a solid 3000-3020fps.