Superhunt, I do all my own work, as I have for the last 30+ years that I had my own gunsmithing shop until I became disabled & was forced to retire & give up my shop. I'm retired now so my labor don't cost me anything lol. I do know a "bit" about conversions as I've done a bunch of them in the past, both for customers & myself. I'm fully aware of what all requires changing. The barrel don't have to be changed as both cartridges take the same diameter bullet.