The ability damage range begins at 37.6-188%, and can increase to a maximum of 73.6-368% with Puncture stacked 10 times. Unlike Shatter, the Constitution stack-based threshold ability, Salt the Wound does not remove stacks of Puncture, and instead refreshes Puncture's duration.
With one Puncture stack, Salt the Wound exceeds (without Flanking) Tight Bindings (206% vs 200%), and with two stacks, it exceeds Bombardment (224% vs 219%), although it lacks Bombardment's AoE properties.
Unlike its partner ability Mutated Dazing Shot, Salt the Wound does not require a two-handed ranged weapon to use. However its not recommended to use it if the player is not using a two-handed ranged weapon.