While it's a great deer bullet, there's no way I'd shoot one at an elk as long as the accubond was available for just a few pennies more. That choice is a no-brainer in my opinion.
The few times I've used accubonds i was not overly impressed.
Then you'll probably be much less impressed with the ballistic tip on an animal the size of an elk. The elk I took a month ago was with a 145 Barnes LRX out of a 7mm rem mag. I surely wouldn't wanted to have shot him with a 140 ballistic tip, though I'm sure there are some that have done it. I like bullets that'll break shoulders though, which the LRX did on my bull.