Better Criticals

Better Criticals is a Perk available in Fallout, Fallout 2, Fallout 3 and Fallout Tactics.

Fallout, Fallout 2 and Fallout Tactics
The critical hits you cause in combat are more devastating. You gain a 20% bonus on the critical hit table, almost ensuring that more damage will be done. This does not affect the chance to cause a critical hit.

Fallout 3
With the Better Criticals perk, you gain a 50% damage bonus every time a critical hit is scored on an opponent.

Note: This affects Sneak Attack criticals too - making it an ideal choice for sneaky snipers.