I used the x bullets for I don't know, maybe 4 or 5 years after they first came out. I don't have anything bad to say about them really, for what they are designed to do, they do flawlessly, but a few years ago I switched to the trophy-bonded bearclaws because they have just enough lead in them to where they leave a bigger exit hole, not terrible like a bazooka or something, but a whole lot easier to blood trail than the barnes X. Listen, the whole reason i shoot these type bullets in the first place, is because in these thickets where I hunt IF I have to track one it is because I pulled off a little bit or the lungs were my only chance, because 99% of the time I'm going for the slightly high shoulder shot to drop them in their tracks, but If I do have to blood trail I'm pretty much gauranteed an exit hole.