I'm happy with the 200 grain eld-x ammo and probably won't change anytime soon. I don't have experience with them on elk but have killed a pig, deer and a bear with them and have been impressed by them. Shots have ranged from 30 to about 125 yards. Pass throughs on both the buck and pig. The pig was moving broadside and I took out the heart he didn't go anywhere except fall off into a creek bed he was running towards. The buck was the furthest and quartering hard to me, the shot was right where his neck met his brisket and exited behind the offside shoulder. Jellied his lungs and he dropped right there. The bear was actually less than 5 minutes after I shot the buck and he came out of the brush about 2 feet away from my buck sniffing around. That was a steep downhill shot at 30 yards and entered just in front of his ear, ran down his neck and lodged in his shoulder. I weighed the bullet I recovered and it came in at almost 68 grains so it shed more than half of its weight. I can't argue the results of 3 shots and 3 dead animals that never took hardly a step.