Keep in mind that killing an elk isn't the same as finding it, even with good hits. For that reason I like to leave as much blood as possible on the ground, which is better with an exit hole, which Partitions do better.
Last year I hit a nice bull three times broadside with 180-grain Accubonds. All bullets were fatal chest cavity hits, but none exited out the other side. He left almost no blood on the ground, but fortunately I saw him fall because it was open country.
Not sure what would've been the outcome if I'd popped him with round #1 and then he'd run into thick stuff before I could shoot again. Now seriously considering going to Partitions or A-Frames. (Yes, I know that's only one instance....)
My experience is opposite. The partition fragmented inside, only the base of the partition exited, with a 7mm pencil hole. Not much blood, but less than 50 yards, we found him.