2.5-4% Bonus Critical Chance on Chained Hit. Stacks 5 times.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
14-20% Strength for 5s when every pellet in a shot hits the same enemy.
Killing an enemy by firing both barrels makes your next Reload 40-70% faster.