With shelled corn strung out in a line along the bank near the water's edge, and aligned with the blind, several can be taken with one shot. Archibald Rutledge wrote of using that same tactic for his "help" to kill several turkeys at one shot, for the table. And it doesn't take a punt gun to do it.

If punt guns had been responsible for the duck decline there'd be a lot more surviving specimens than there are.

SRH

May God bless America and those who defend her.