Fallout 4: All Legendary Weapon Effects and What Each Does

Enraging: Critical hits cause the target to frenzy.

Explosive: Bullets explode on impact, doing 15 points area-of-effect damage.

Exterminator’s: Does 50% more damage against Mirelurks and bugs.

Freezing: Does 10 points Cryo damage and will freeze targets on critical hits.

Furious: Increased damage after each consecutive hit on the same target.