2017 we took two elk, a muley, 3 whitetail, and four pronghorn with 178gr ELD-X (30-06 Precision Hunter rounds). No complaints on performance Shots ranged from 200-500yds. 2018 we took 5 pronghorn, three elk, and 2 muleys with 143gr ELD-X (6.5CR Precision Hunter Rounds). One elk was a mature bull at 150yds. Shot placement was back as my 13yo shot him while he was walking slowly and the shot was taken standing off a tripod. Bull went ~100yds with no blood and required a finishing shot, but he was down and not going anywhere. The other two elk were headshots. One muley buck was ~300yds hit in the boiler room. The shot was devastating; blew out both lungs with a large exit. He took two steps down a very steep mountainside before tumbling. Muley doe was shot at ~250yds. We thought he may have missed on first shot as she appeared unfazed. He hit her again ~2" from first shot. She was dead, she just didn't know it yet. I would not shoot an elk purposely in the shoulder with the 143gr. Then again, as a meat hunter, I wouldn't purposely shoot any elk in the shoulder. I pass if I don't have the right shot.