Atom Balm VR Questions

So i put on redistributor with Rad, and other ran weapons, went into SS with an Atom Balm VR with SMG dam, Shock Dam, and reload i think it was. I seem to be rocking. But when i went back to the dummy on the ship to test it, there was something off. I took Seein Dead mod off, removed all but the Atom Balm and here is what was happening. Atom balm on 455 dam, atom balm off 625 dam. ??? Whay was i doing less with the balm? What is requirements on it to get the perks, is this not an artifact for Zane? It also talks about aura, i see no aura and when standing next to an enemy i say no rad damage