Half a year ago, right before Ogryn’s rework, I made a topic on grenadier gauntler/rumbler blessings balance.
The devs just insist on making Rumbler a spam weapon. Even more so with Lucky Bullet rework.
At this point there’s only two ways to balance it. Either rework the weapon, so that it deals no damage to armor at all. Or give it more ammo and make it gain ammo from grenades, instead of ammo boxes to bottleneck its spammability.
I don’t care how strong the weapon is, my problem with Rumbler is that it’s 30 minutes of constant explosions which make my head hurt from playing in headphones. I’ve also had situations where Ogryn spam it into elites and make it impossible to see if they’re attacking or not from all the smoke and explosion effects.