I've never hunted S Dakota, but in ID (shotgun only) and MT I have taken all of mine within about 40 yards. It sure is possible to shoot one strutting in a field or across a canyon at a couple hundred yards though.
Do the regs specifically require 700 ft/pounds for turkeys or was that in a general big game section? That seems kind of a lot to me. The few I have taken with a rifle were with a .17 Rem and that was more than enough.
