Hunter · Marksmanship · tier 4 · from level 25 · needs 5 points in Careful Aim

Mortal Shots

+1.6 Volley

5/5 · level 60 · per cast · and 5 more

Mortal Shots 12345

Rank 5/5

Increases the critical strike damage bonus on all ranged abilities by 30%.

Volley +0.2% +1.6 Aimed Shot +0.2% +0.8 Arcane Shot +0.2% +0.5 Auto Shot +0.3% +0.4 Multi-Shot +0.2% +0.4 Scatter Shot +0.2% +0.2

Averages, counting crits and misses, for a level 60 Hunter with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.