I did this the first week potions came out, so yes. (Double checked, and math shows you need an avg ~23x modifier with no lost sigils/valravens)
T4 should be mathematically impossible to get full rewards with perfect valravens (and above average, clamped to +1) even with a couple blue orbs to max out your bounty modifier to x28 - you need to avg a 30x modifier (you’d be just short if everything went your way otherwise). 19 rewards at x20 modifier is just possible, without blue orbs on a perfect run, though, unless you get unlucky.
I did it the last few Bounty events. Tier IV without the Ascension orb so multiplier was x26. You need to be perfect (no losses or missed valravens) or if you miss 1 valraven or loss up to 2 battles you need the last valraven to spawn at the beginning of his possible range and not at the end.
I did it to get Dragons claw to Max stars. I could give 2 or in this case… 2 (insert Ascension emoji that we don’t have for some reason? @Ozball I think you were the one who added Doomskulls to the forums) about the bounty rewards.
Anyway, yeah that’s why I did it. I’m gem broke after City of Thieves.
Except for Kingdom Power Level.
(My goal used to be having all the troops, then it was having all the pets, pets to Mythic ( that was ruined by the Honor system), and now it’s just have the Kingdom Power Level maxed. While also not getting too behind on Mythic pets assuming they’ll one day allow us to get more copies of the Revered Kitty.