I have a couple that fill the bill for practice . A 17 HMR, 22 K hornet and for longer ranges a 223 AI.
They are very tough on varmints also if live game is available.
The idea is to shoot as often as possible without braking the bank.
NOTE: If I am using a larger rifle for larger game, Then I always take it to the range for a little practice and just to check that everything is still in order. (Zero, function, ammo. ETC)
They say that "practice makes perfect". It doesn't, but it sure helps.
J E CUSTOM