Northland Shooters Supply lists Shilen barrels in .17 Fireball. I have a Savage M12 that was a .308 when I bought it used. Changed the barrel and bolt face, added a single-shot adapter and there you have it. Julie's Savage was rebarreled from a .223 so nothing else needed changing. We really like the little Fireballs. The bad news is brass is next to impossible to find. It can be made from .223 brass but I haven't reached that point yet.
If I was just now starting with a .17 centerfire, I would take a look at the .17 Hornady Hornet.
"you ain't done nothin' if you did it halfway"