Ah you know I had assumed that wasn't the case cause silvers gun was doing 17-18 spirit damage, but I realize now that that damage is spread across 7 projectiles so roughly 2.5 spirit damage per projectile, that does make sense then.
Ults that replace your primary fire (Silver Lycan form and Venator crossbow) spirit damage scaling seems incorrect with Mercurial Magnum. At first I thought maybe these weapons base damage was just really low and they have in built multipliers, but they seem to scale significantly with weapon...
This could be intentional but feels like a bug. Each time flawless advance is used the duration is refreshed. If Flawless advance is used near the tail end of the duration however, it casts appropriately, but does not refresh the duration.
This also applies to Long Range/Sharp Shooter. It described it as being a weapon damage increase so I thought Viscous' puddle punch would get the long range bonus but it does not.