Question on Walther Falcon Hunter .25 caliber air rifle.?

I've read and seen a photo of a fox killed by a .22 air rifle (Spring piston) at about 20 to 25 yards. It was a temple shot. So the Walter Falcon Hunter should be fine. I've also read that the Turkey made WFH is a real beast (Difficult) to shoot....you'll need alot of practice with it. It's very powerful...so it have alot of torque.