What is the average body weight of these does?
Why does that matter? Especially if he's shooting them in the head.
For soft tissue shots. Easier to get a Stinger or Mini Mag through an 80# deer than a doe that will go 125# or more.
I understand he said head shots only but if they are smallish 100# or so does I wouldn't think twice about a lung shot.
I'd think twice about the whole damn thing!
lol
To be honest I wouldn't think about it at even if legal. I have seen the above work, and work damn fast too.
If I were me and I wanted quiet I would get me a 223 and suppress it shooting a 55 grain Gameking. Super deadly combination there, at least on these Missouri deer.
Also understand not everybody has the funding for a can either. It's legal and if the shooter feels they are up to the task then why not.
I personally wouldn't shoot #6 shot at turkeys but people do and the results speak for themselves.
It's a legal method where the OP is so if that's what he wants to use then go ahead.