I shot a good size cow Elk with the 6.5mm - 142 LRAB. In all fairness, the shot was 380 yards.
I was using my 6.5x55AI, and MV of that bullet is just shy of 3000 fps.
The Elk was DRT, and I recovered the remainder of the bullet, around 65 grains IIRC.
The LRAB are definitely more fragile than are the regular AB, but the bonding prevents them
from blowing up completely.
I shot a young Bull Moose at 125 yards with my 308 Norma Magnum and the 210 LRAB.
The shot was nearly broadside, and the bullet exited, so no blow up there.
I am not advocating the LRAB, I do prefer the regular AB, since it is definitely "tougher"
Regards, Dave.