Personally, I like to stay away from expandables for elk. 90% of the time they're going to do the job. I truly believe fixed blade heads will get the job done on a marginal shot when a expandable will let you down. (a should shot) I've seen it first hand. I would try a few different heads and see what flies good. G5 striker, magnus stinger, and my favorite..vipertricks from slick tricks. Cut on contact for me when it comes to elk.