Don't want to start a argument here and this is just MY OPINION.
Even if it was legal, I woulden't shoot a turkey with any rifle. With the load mentioned, If you hit the bird in the body,you'll wound it. a big NO-NO. The kill area on a turkey to put it down where you can recover it is the spine and head, a very small target. With a turkey bobbing it's head and moving around the way they do, It would seem to me to be chancy at best.
To me, the sport and thrill is getting the bird in close with calling,leave sounds,dekes etc. Takeing rifle shots just isn't in the pic. for me. Most states have outlawed this. If a challange is what you seek, try a Tom with a bow.