In the next few weeks, your wiki will be migrated to a Fandom.com domain. Learn more here.
With the Ricochet perk, an enemy's ranged attack will sometimes ricochet back and instantly kill them. Such a death may even fill your Critical meter.”— Fallout 4 loading screen hints
There is a chance that an enemy's ranged attack can ricochet back and instantly kill them; the lower your current health, the more likely the chance. The second rank increases this chance, and the third rank causes your critical meter to fill every time an enemy is killed by ricochet.