I was surfing ebay tonight looking for a .280 Rem. barrel for my Thompson Encore. I happened across a barrel that just about made me PUKE! I'm hoping the link works, but all I can say is WOW! I'll let ya'll decide what you think of it.
http://cgi.ebay.com/AIRROW-ARCHERY-BARREL-FOR-RUGER-10-22-RIFLE_W0QQitemZ7179701396QQcategoryZ31709QQrdZ1QQc mdZViewItem