Either way, musket is superior to the 'shark.
What?
If you're talking about damage per bullet, then I'd agree; but in terms of DPS, the minishark is superior.
In the time it takes to shoot one musket bullet you'd probably be able to fire ~5 minishark bullets.
Skeletron's 6 defense cuts the musket down to 15 per shot, and the minishark gets 6DMG X 5 shots.
If targeting the hands, musket is cut down by 9 to 12, where the minishark is 3 X 5 shots.
Though, the biggest downside is DAT COST. How much does it cost to fire this for 12 seconds?
Flail against bosses. It hits multiple times if you cast it above your head when Skeletron is levitating.
With Blue moons being Dungeon-only and Sunfuries being a rare drop from Bone Serpents, I think he's still getting by with a Ball O' hurt.
Also, has anyone else tried throwing Vile Powder on Skelly?