"Yeah, riiiight, careful. Got it". Honestly, being careful? With a grenade launcher? The sheer ridiculousness of the idea was astounding. Plus, that'd just be boring.
Giving Boom a forceful pump to clear the chamber, Finn locked eyes onto the beowolves that had dodged right to avoid total incineration, and were now attempting some sort of flank, though they weren't being subtle about it. Spinning on his heel, Finn fired his second and third grenades that them, a pair of repulsion grenades, the first of which tore through the air and impacted the centre, splitting the half-dozen or so Grimm apart and sending three straight up into the sky.
The third, sent in a graceful arc, detonated atop one of the airborne Grimm, and slammed it and it's friends right back into the sand. One dissipated sadly upon impact, while the other two were half buried in the beach from the sheer force of the grenade.