I get five turkeys a year here in California with an air gun. I also guide many of my friends so, maybe 7 to 10 turkeys each year?
I've used everything from .177 up to 30 cal. I've used air bows, crossbows, and I've even gathered a friend with a recurve though. All you need is 12 ft lb. Anywhere from the brain to the neck where you can break the bone and that bird's going down. I've even hit one where it went through the jugular and I did take a second shot just to put it down quickly but again very little power is needed with the correct placement. I have to say that I've seen a lot of body shots, and a lot of birds that have survived body shots and the only one that died is one where my daughter shot at at 115 yards. She put a 30 cal slug in the same spot you would shoot with an arrow through the back. It went through the liver and killed the bird almost immediately. You are not going to have any problem killing a turkey with that Air Force. I have a lot of turkey hunts on the Diablo rod and Gun YouTube website....https://youtu.be/X2dDUTOZAu8?si=bsQc6iZ76eQob2cv