143 ELDX has lots of good kills in my group, from 20-465 yards. Loads of whitetail, some pronghorn, African game up to kudu.
At higher velocities, (up close) you’ll have lots of expansion and generally no exit, but the animal is DRT. At slower velocities, you’re more likely to get an exit wound, but it still kills quickly.
As with all bullets, you’ll occasionally have odd performance. Our most notable example was a whitetail shot broadside at 170 yds, and the bullet veered sharply to the right, coming to rest in the backstraps almost at the hips. Still wrecked a lung on the way in, and the deer was down within 20ish yards, but not great for the backstrap meat!
We only have a handful of kills with ELDM, but so far performance seems pretty similar, maybe slightly more expansion.