Faction [Hardener To Use] (Ammo to use against):
* Angel [Kinetic/Explosive] (Explosive)
* Amarr Navy [EM/Thermal] (EM/Thermal)
* Blood Raiders [EM/Thermal] (EM)
* Caldari [Kinetic/Thermal] (Kinetic)
* Concord [EM/All Dmg Types] (Thermal)
* Drones [All 4] (EM)
* EOM [Kinetic/Thermal] (Thermal)
* Gallente [Kinetic/Thermal] (Thermal)
* Guristas [Kinetic/Thermal] (Kinetic)
* Khanid [EM/Thermal] (Thermal)
* Minmatar Fleet [Thermal/Exp] (Thermal)
* Mercenary [All 4] (Thermal)
* Mordus [Kinetic/Thermal] (Kinetic)
* Sanshas Nation [EM/Thermal] (EM)
* Serpentis [Thermal/Kinetic] (Kinetic)

* -2.0 or worse 1.0
* -2.5 or worse 0.9
* -3.0 or worse 0.8
* -3.5 or worse 0.7
* -4.0 or worse 0.6
* -4.5 or worse 0.5

** Targeting systems **
Minmatar - Ladar
Caldary - Gravimetric
Gallente - Magnetometric
Amarr - Radar

http://i.imgur.com/oRFky7H.png
http://eve.grismar.net/ore/full.php
http://www.evepraisal.com