Get a nice .22 and learn how to shoot a rifle.
+1. There are a lot of skills to be mastered in shooting a rifle and it takes a fair amount of practice. A decent bolt 22 will pay for itself and more in ammo savings during the learning period and you won't have to cope with the recoil and blast of centerfire ammo.
And in the end you'll have a good 22 you know how to shoot, which is always a good thing.