The thread on Appleseed reminded me that I need to seriously think about purchasing a good, accurate rifle in an affordable caliber---the Appleseed goal is torso hits at 500 yards.
Right, now, the only requirements I have to have are detachable magazine and adjustable iron sights. Sling loops are pretty close to being mandatory, though I realize I could always have those added afterwards. I am leaning towards .22LR, but will consider other rimfire calibers.
Right now, if I had to choose blindly, I think I'd go for a CZ 452, probably the Lux model. Also high up on the list are the Savage rimfires, either 64G (semi-auto) or Mk II (bolt).
I am open to any and all input on the matter, though.