For PvE the general ‘Rule of Thumb’ is to shoot into the weakest resists of the rat type you are fighting but you must remember the tiered damage when using Projectile Ammo.
For example lets look at the Guristas Faction below. Their lowest resist is to Kinetic damage, so you would assume Titanium Sabot is the best ammo to kill them but when you factor in the higher base damage of Phased Plasma into the equation it makes up for the slightly worse resist profile to Thermal.
Faction | Damage to deal | Damage to resist | Electronic Warfare Used | Electronic Warfare Countermeasure |
---|---|---|---|---|
Angel Cartel | Explosive / Kinetic | Explosive (62%) / Kinetic (22%) | Target Painters | |
Blood Raiders | EM / Thermal | EM (50%) / Thermal (48%) | NOS/Neut, Tracking Disruptor | |
Equilibrium of Mankind | Kinetic | Kinetic (74%) / Thermal (26%) | ||
Guristas | Kinetic / Thermal | Kinetic (79%) / Thermal (18%) | ECM | ECCM |
Mercenaries | Kinetic / Thermal | Kinetic / Thermal | ||
Mordu’s Legion | Kinetic / EM | Kinetic (70%) / Thermal (30%) | ||
Rogue Drones | EM/Thermal [1] | (varies) [1] | ||
Sansha’s Nation | EM / Thermal | EM (53%) / Thermal (47%) | Tracking Disruptor | Tracking Computers with or without scripts |
Serpentis | Kinetic / Thermal | Thermal (55%) / Kinetic (45%) | Sensor Dampener | Sensor Booster + Targeting range script |
Faction | Best Projectile Ammo | Best Missile Type | Light Drone | Medium Drone | Heavy Drone | Sentry Drone | Light Fighter |
---|---|---|---|---|---|---|---|
Angel Cartel | Fusion | Nova | Warrior | Valkyrie | Berserker | Bouncer | Einherji |
Blood Raiders | EMP | Mjolnir | Acolyte | Infiltrator | Praetor | Curator | Templar |
Equilibrium of Mankind | Phased Plasma | Scourge | Hornet | Vespa | Wasp | Warden | Dragonfly |
Guristas | Phased Plasma | Scourge | Hornet | Vespa | Wasp | Warden | Dragonfly |
Mercenaries | Phased Plasma | Inferno | Hobgoblin | Hammehead | Ogre | Garde | Firbog |
Mordu’s Legion | Phased Plasma | Scourge | Hornet | Vespa | Wasp | Warden | Dragonfly |
Rogue Drones | EMP | Mjolnir | Acolyte | Infiltrator | Praetor | Curator | Templar |
Sansha’s Nation | EMP | Mjolnir | Acolyte | Infiltrator | Praetor | Curator | Templar |
Serpentis | Phased Plasma | Scourge | Hornet | Vespa | Wasp | Warden | Dragonfly |
[1] Rogue Drones vary with the damage type they deal and are vulnerable to. Low-level missions seem to lean towards EM/Thermal while high-level missions lean towards Explosive/Kinetic. As a general guideline you would not go overly wrong shooting EM and tanking Explosive against them.
More reference:
AeonOfTime’s Damage Types Cheat Sheet
Chruker’s EVE Online Damage Types
EVE Uniwiki NPC damage types
OGRANK Eve Online NPC Damage Types