Did the ELD-X exit? Where'd it hit him?
Have used the 143 ELD-X some in 6.5 cartridges of about 6.5x55 power-capacity, at around 2700 fps. They penetrate well at those velocities--but I see the listed muzzle velocity of the 110-grain .25-06 load is 3140 fps....
Family used the 110 ELD out of a 257 Wby with a heap of H1000 this past year on a moderate sized black bear and a few deer. It was brutal but very terminal. He recovered the jacket on the far side on the bear but it hammered through the deer leaving decent sized exit holes.