I did this very thing a few years ago using an FN single shot action as the basis for a classic 22-250 varmint rifle. I tried to stay retro, but as I got deeper into the project, some of the "period" influences were eschewed for more practical or elegant features. It turned out to be the best piece I own. I'm glad to send you some pictures of the finished work as I don't subscribe to a host site. Perhaps the finished work will inspire you in your efforts.