Well back to the topic.
I see no problem using a firearm to tuRkey hunt where the one using said firearm has done their homework.
And the choice of gauge used is legal.
Your homework is patterning and knowing the firearms lethal range for the gauge and ammunition being used.
To boost my lethality I went to that new TSS shot. Is reported to pack a big punch. It certainly did
Was surprised what it did to my plywood backstop. Just mushed that turkeys head.
I highly recommend patterning on Caldwells life sized Turkey splatter targets
Stick with 8 to 10 red zone hits to determine your maximum lethal range.
(Only skull, neck vertebra, eye hits)
Then stay in that range.
That is part of a hunters code of ethics.
Be safe out there.