You can find a decent custom in your price range if you are patient. Another source is to diligently check https://www.trackofthewolf.com/List/Item.aspx/487/1
Every now and then you will find a nice rifle in your price range on that site, but you absolutely have to act fast. They don't last long in that price range if it is well done.
Dirty Steve
What is a "swamped" barrel?