Welcome to the board, Lambeth. The guys must have missed your question, so I might be able to help and someone else might jump back in, too. Just about any decent gunsmith should be able to raise a dent in a barrel. But if you want to do it yourself, there are dent raisers available from places such as Brownells or Midway, USA. You can check their website for prices, but first I would check for a smith near you. Good luck.