Spark,
I have bought most of my air rifle used: from Minn, Indiana, Washington State, Ohio, Wisconsin, New Mexico Arizona, and a few places I am sure I have forgotten about .I didn't have a chance to look at a one of them, other than e-mailed pictures. But, I did call and talk to the owner of each gun , before I bought the gun. There is not a one I would send back. I also talked to a few guys with rifles and decided to pass. Take the time to learn about the man (or Woman) and you'll learn about the gun. If I only had $400 to buy an air rifle it would really depend on what I had but odds are I would buy through the classifieds here or elsewhere. If an HW-77 is what you're looking for, take your time, check the adds day and night and talk to the guy.In fact,I was thinking just today that I might know where there is a used but unabused HW-77 I might talk to a guy about. Good luck.