PoE Champion, Gladiator, Scion, Bow builds with custom stat filters

I'm following this build. POB I do zero damage and it would be nice to be able to do some damage to the titanic shells when they brick the run. Are there any weapon/gem combos that alone, would provide enough dps to kill the things? Budget would be something like 20D max.

I have theory crafted a Rain of Arrows champion trapper, the build has good defence while maintaining good damage, the build is still a work in progress and is not the cheapest build to start, i suspect it could be reliable on a 50 div budget. The build sits at around 50K armour + 50k evasion without perfect gear, 100% spell suppression and ailment immunity while have good movement speed due to onslaught, adenaline and quicksilver. The single target dps is around 16 million at the moment as we are able to front load damage before most bosses. The POB will show x60 Rain of arrows for bossing