I love hunting turkeys in the fall with a rifle (in PA), have used 218 bee, 221 fireball, 256 Winchester, 7.62X39 and 222. Always use expanding bullets as fmj (what the old timers always recommended when I first started in the 70's) always produced less than satisfactory results unless the central nervous system was hit OR velocities were higher. Any of the rimfires would be problematic unless you hit the CNS....have seen more than a few turkeys that were not hit properly with rimfires get "lost".

PennDog