OK turkey hunting rules are kind of different. In the fall we can use muzzleloader rifles, centerfire rifles, rimfire rifles and shotguns. In the spring it is shotgun only.

i prefer to hunt turkeys with a rifle where it is legal to do so. Have killed a truck load of turkeys using a .30-06 and military ammo. The .30 caliber military bullet drills a small hole through the turkey. The hole is often full of chopped up feathers.

http://www.wildlifedepartment.com/regs/turkeyregs.htm