Better Criticals

Better Criticals is a Fallout, Fallout 2, Fallout 3, Fallout: New Vegas, Fallout 4, and Fallout Tactics perk.

Fallout, Fallout 2 and Fallout Tactics
With this perk, a +20% bonus is applied on the Critical Hit table, ensuring more damage by critical hit and sometimes triggering an instant kill effect, that can kill the target no matter the amount of damage inflicted (the target can be killed instantly with no damage).

Fallout 3 and Fallout: New Vegas
With this perk, the weapon's critical damage is increased by 50%.