12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
1-4 Bleed Stacks on non-Weak Spot Hits.
14-20% Damage on Second, Third and Fourth shots in a Salvo.
35-50% Weakspot Damage on Second, Third and Fourth shots in a Salvo.
If you're willing to trade survivability for more consistent DMG, trade out WS for Precision Strikes (benefits both weapons).