Used rifles aren't like used Cars/Trucks
I really like buying new firearms. Having said that it is very easy to tell if the previous user was a moron with his/her firearm. Huntingman is right as always, that your money will go farther on a used firearm. The big advantage that I see is you will normally get the optics for free. For example say the used rifle package cost 600.xx new rifle cost is 700-800 dollars, a lucky person gets a Leopold vx2 or vx3 worth new another 200-400 dollars for free. A rifle isn't usally re-blued after abuse most owners just sell them off. Some owners treat their rifles like canes or boat oars, we have all seen those on tables at gun shows. Bottom line I still would rather pick up new ones but wouldn't worry about a used one.