Damage To Resist Damage To InflictDamage to deal against:
Angel Cartel: Explosive
Blood Raiders: EM
Guristas Pirates: Kinetic
Mordu's Legion; Kinetic
Sansha's Nation: EM
Serpentis: Kinetic
Amarr: EM/Thermal
Caldari: Kinetic/Thermal
Gallente: Thermal
Minmatar: Thermal

What to resist for against:
Angel Cartel: Explosive
Blood Raiders: 50% EM, 50% Thermal
Guristas Pirates: 80% Kinetic, 20% Thermal
Mordu's Legion; 70% Kinetic, 30% Thermal
Sansha's Nation: 50% EM, 50% Thermal
Serpentis: 55% Thermal, 45% Kinetic
Amarr: 55% EM, 45% Thermal
Caldari: 50% Kinetic, 50% Thermal
Gallente: 60% Kinetic, 40% Thermal
Minmatar: 50% Explosive, 40% Thermal

Stacking Penalities
1st mod: 100,000% effectiveness
2nd mod: 86,9119842% effectiveness
3rd mod: 57,1037996% effectiveness
4th mod: 28,2469117% effectiveness
5th mod: 10,5988834% effectiveness

Targeting Systems
Minmatar - Ladar
Caldari - Gravimetric
Gallente - Magnetometric
Amarr - Radar