I agree the .22LR is the way to go. My choice is also on the list. Good ol' Ruger 10/22. Easy to work on, accurate and more mods/upgrades than Carters has pill.

http://www.fieldandstream.com/fieldstream/photogallery/article/0,13355,1024788_11,00.html
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If only closed minds came with closed mouths.