Jeez; I don't know about chrome lining; it is not the most desireable thing to have on a rifle, you often sacrifice some accuracy for additional corrosion resistance.
As far as Stellite, I doubt that a Cobalt-Chromium alloy could be successfully applied to a gun barrel, but ask Stellite del Oro directly:
Deloro Stellite, Inc.
PO Box 5300
Bellville, ON K8N 5C4
P: (800) 267-2886
F: (800) 565-4407 Walt