56 round delivers nearly 3 times the energy of what liberty is advertising. Nothing worse than reloading in a time is life situation 10 rounds sooner than you needed to. I am skeptical however with regards to liberty that 2000fps will actually be achieved and whether or not a 50gr bullet at such velocity will have sufficient energy to put it the rifle category of ballistics (not that you specifically implied that). Com is the internet’s largest xd & xd(m) community.
I also agree that rounds that effectively expand and dump all of their energy into a target can be very lethal. Continued on next comment.