I don't understand why a bullet needs to stay together after impacting an animal? What is the reasoning behind this age old weight retention argument? If the bullet comes apart it destroys tissue, that's what causes blood loss and death. How is there any benefit to a bullet retaining all its weight and exiting the animal only to waste its energy in the dirt? I shot two cow elk, four deer and an antelope last year with eld-x bullets 162gr 7mm, 212gr 30cal and 225gr 30 cal. All the animals died quickly none ran anywhere. No exit holes on any animal, no tracking no blood trails to try and find. I found the 212 bullet in the cow elk under the hide on the opposite side. It was an empty jacket, don't know what happened to the core other than it tore up the internals of the elk. I am not disappointed, the elk dropped and I packed it out.