PoE Rearguard, Bow builds

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.

There has been some controversy about my Lightning Arrow build and /u/officialvehx have provided a very useful TR tree. I have merged it with my LA build and tweaked it to be have a lot more defense. My concerns with TR was the "overlapping pods" configuration in PoB which I am still unsure about but even if it turns out to be just one, the damage is not that bad, it's 41K DPS vs ~60-65K DPS from the LA build and if it turns out to be really three then

(sorry, that's already 3.19 trees I recreated the main tree in 3.18 1. Why this post? Because most guides do not focus on the peculiar problems arising from doing this just a few hours into the league. 1. Why not Toxic Rain? I tried but we are doing roughly three overlapping TR pods worth of damage and it's hard to guarantee there'll be that much or more for TR. Also, our weapon is very cheap -- see below -- while a 5L Quill Rain is anything but. 1. Why Lightning Arrow? We are Raider for speed and to get a lot of life we need every li

Just wanted to throw this PoB out there, since I really like the Thread of Hope location I discovered. 4.5m Single Target DPS 8 Second Bleed Lots of Mitigation using Armour, Block and Spell Suppression PoB:

How to avoid all stuff This post based from another, where i left a "hold my beer" comment post I want to share with you my Bleed Bow Build, which have many peices of little interactions giving in the end nice things I cant say this bleed bow somehow much different from another builds in gameplay, except its MORE safer and you dont need to perma push all flasks, only one