you could stick to something cheap, or you could get something fun. personally, i like .50 cal rifles, such as this m82 below.

you can shoot over 18,000 yards (over 10.5 miles) with that thing and still be accurate and blow up armored vehicles.
but if you're not in the mood for exploding your cute animals, you could stick to a smaller rifle, such as the m24.
or you could just get a .22 cal rifle... which i dont have pictures of.
btw, i'm not a redneck, it's just sniping stuff is hella cool so i sometimes look into that stuff.
--edit--
oh ya first 2 might be a little out of your price range.
So this baby seal walks into a club.