Poring Search Question

[The Legendary Joe]

Would it be against the rules to Take a gunslinger with a Shotgun into the Jester's Poring search minigame? Each normal attack from a shotgun has a 3x3 splash like a weapon carded with Baphomet card, potentially killing lot of porings at once. Sure they'd get cursed with that sleep status (Wonder if nightmare card would counteract that...), but it's currently a possibility of a potential exploit.