In the 9.0.0.1 Bungie stated that they have the bug when Volatile Rounds were granted by EVERY kill and now must follow the description. The description reads as follows: [quote]Defeating a target creates a Void burst; hitting other targets with this burst makes them volatile and grants you Volatile Rounds for a short duration.[/quote] This is not how this perk works, as shown in the clip. I defeated a target. This created a Void burst. This Void burst hit two other targets and made them volatile, but didn't grant Volatile Rounds for the weapon. Current activation of Volatile Rounds seems random.