Only a sample of one - but I shot a mature Roosevelt cow elk with the 129 IL this year out of my .260.
At about 100 yards it hit the shoulder, doing extensive damage and trashed the lungs. The elk basically died right there.
That's probably more critter than the bullet was designed for, but I sure can't complain.
I'll continue to use it on deer, etc, but will bump up to the 140 IL for elk chores in the future.
I'm pretty content to run the Hornaday IL's in all my rigs these days.
