40k RPG Master Armoury -Vengeance Rounds

Requirements
Weapon category	Ranged
Weapon class	Basic, Heavy, Mounted, Pistol, Thrown
Weapon type	Bolt
Modifiers
Damage type	Energy
Penetration	9
Special effect	Rolls Of 91-100 Indicate The Round Prematurely And Jams The Gun.
Aquisition
Cost	+25
Availability	Renown required: Famed
Source	Deathwatch - Deathwatch Core Rulebook pg. 160