While the cyborg goblin isn't good at aiming, it does "pack a punch" so to say, so Boothill will be met with a very strong force and it is likely that he will lose an arm, but he does manage to protect Mei.

Also due to hurting a "fellow metal" it will temporarily halt attacking, uncertain of what it should do, since it doesn't want to hurt its "kind". It will try to lob some projectiles towards Mei, but they're less strong due to Boothill being so close.