a1 qs3 a3 cannoneer
It works, but it is rather painful from 180 to 225 and you might feel like you’re not contributing as much as you should in dungeons due to lack of AoE and being locked into a lv 40 crossbow (you don’t keep the damage bonus if you cast swap, so Grand Cross still does more running shot damage than other crossbows besides Didel Grand Cross).
Kneeling Shot animation cancel doesn’t appear to work properly (?) in iToS so don’t expect your AA to get that much faster with A3. You’ll also probably need AoE ratio gear for multi-shot and cannon skills. On the bright side, your multi-shot will be very strong and the attribute is cheaper than most. It will also be easier to keep SS up, and extra speed/range on kneeling are handy.
2nd build
a1 qs3 a2 falcon1 cannoneer
You miss out on stronger multi-shot and range/speed on kneeling will be a bit lower. Falcon takes a lot of getting used to (kinda clunky), you will have a lot more hotkeys to keep track of and the CD is pretty long. However, your Lv 10 multi-shot will become a very strong small range AoE and you will provide a lot more DPS to several party compositions. Your cannoner skills can blow up the entire screen if aimed properly under circling, and you won’t feel the need to make as many investments into AoE ratio gear.
I went for falcon, personally think it’s a lot more balanced even if it’s not as simple to play. You do lose some single-target DPS for greater aoe/party utility and you have to keep track of more skills. The falcon is free, but it does use up a character slot.
Small warning, but if you haven’t relogged in a while or there are many things on screen… auto-swap can freeze your screen for seconds when using it to load musket/cannon skills and it can often get you killed. You either find ways to deal with it, or swap manually (it lags a little less) when you want to use the skills. WTB>Better game optimization.