Any one have any experience with a Vetterli 10.4x38mm? Customer gifted me one today. I was astounded! I did a little research and it shoots a .41 cal. rimfire/black powder shell. Do any of you gun guys know anything about these? I'm wondering if I will ever be able to find some one to make me a shell for it...either way, it's a beautiful, long heavy rifle. #s on the stock, action, and barrel all match so i know it's OG! Made for the Swiss army in the late 1800s