on cabellas, a good option would be the beeman gh950 in .22. I run .22, and personally i think they are better for hunting. There is a saying which goes '.22 for fur, .177 for feather'-but this isn't really true at all. your main concern should be the weight of the pellet- heavier is better, but you have to be closer! everything is a question of balance

if your not going to spend loads on a gun then i would recomend the smk super grade xs20. it cost only £140 but it comes with a silencer, which is nessercery when hunting rabbits. but if thats too exspensive the you should try your nearest gun dealer
and speak to them about getting a second hand rifle.
and explain what it is you intend to do.

What is your main interest. outdoor pursuits