I shoot a few different bullets, but would only hunt with the X. In lighter loads you can use XBT and not worry about lack of penetration. In the larger bores, I haven' t been able to measure the actual penetration yet. My .416 has gone through my target box every time. I did ALOT of shooting with .300 winnie and the 165 xfb is noticably better than the 200 part.