Cannoneer is 1 hit huge damage. You can solve this in two ways:
Whatever the case is, because the base damage for Cannoneer is so large, having a high crit rate would benifit it more.
Split arrow is not really high in terms of multi-hits since it only hits 3 times. What would be considered high is:
Multi-Arrow (16 hits)
Magic Arrow (25 hits)
Broom Trap (whatever the theoretical limit is)
I want a same build , (y) show me your build pls
just go full dex till 170 or until you get good gears. This will also help you to survive because of the evasion that DEX gives and still do - ok - damage due to high crit chance.
After getting your gears, you can start pumping STR for more damage 
After lvling an Scout to lvl 220 and having several friends who got many archers at 280, the best build would be STR:DEX 3:1. As you will be given a lot of critical rate from Sissel Bracelets.
3:1str:dex with sissel or full dex with glad band which do you think gives higher damage?
3:1 STR:DEX 2xSissel
You need con in those build …
Yeah sorry, i’ve been playing enough to suppose people already know that in every build you have to increase con up to 75/100.