I couldn't help but notice, there's not a good speed farm 6-pc Wastes/Bulkathos script in the Barb section. Well I decided to make one for myself and it turned out pretty decent so I decided to share.
Find the script here: http://www.ros-bot.com/custom-script/6-pc-wastesbulkathos-speed-farm-118548
This script has your Barbarian use the following items to run fast: Warzechian Armguards (Bracers), Chilaniks Chain (Mighty Belt).
As well as 6PC WASTES SET, AND 2-SET Bulkathos weapons!
The bracers give you a speed boost when you break a destructable object, and the belt gives you a speed boost for 10 seconds when using War Cry (that's a 50% uptime on a 30-40% speed boost without CDR!).
This build runs the following skills and does work with focus and restraint!
-Bash, Punish rune (For focus and restraint and an additional dmg buff from the punish rune)
-Whirlwind, Blood Funnel rune (for healing, and scales with physical dmg that most Barbs stack)
-Sprint, Marathon rune (For fast solo play!)
-Battle rage, Bloodshed rune (For blowing up packs that aren't quite one-shot-able)
-War cry, Impunity (This script is set to ignore mechanics by outgearing them for speed, the impunity rune helps with resist to do so)
-Wrath of the Beserker, Insanity rune (For fast elite packs, rares, rift guardians)
PASSIVES: Weapon Master, Rampage, Unforgiving, Animosity
WEAPON MASTER, ANIMOSITY, AND UNFORGIVING ARE REQUIRED!!! You will not have adequate fury generation for near-perma whirlwind if you do not have these passives!
(Note: Most things get 1-shotted in t6 rifts, and bounties. This is why weapon master/bulkathos alone, are not enough to generate fury like they are in reasonably high GRs. Things simply die too fast to generate adequate fury to compensate for WW.)
As a reminder, this build is MAINLY for speed bounties, and t6 rifts.
I DO NOT reccomend it for higher GRs. Although you could probably switch Warzechians out for different bracers (Since there aren't many breakables in GRs) and use it to speed farm lower GRs.
I hope you like my script as much as I do. :)
this is the one I have used for years and tweaked to my liking.
I get 18+ games per hour and 2 bil gold/hr
sprint marathhon, war cry chilaniks, ip bravado each 40% ms
ferocity 15%, gold pickup 25%, wotb 20%, globes passive 20%, bulkathos weps 45%
many movement speeds very fast