Dungeon Mastery: sci-fi weapons

SCIFI WEAPONS
An interesting Scifi-weapon informational discloses the energy of various weapons in scifi measured in joules. Now we can look at damage charts for these things. Given the bone club used in 2001 space oddessy is a hundred and twenty joules we can likely convert energy to hitpoints damage at 1hp per 100 joules. That gives us a heavy bone club (2d6), s-mart's top of the line 'boom stick' (6d6), and the halo sword (15d6). Sounds about right so here is a chart:

Now some guy from the future can yell to the rock throwing crowd: 'this is my boom stick!'