Sam,
I had always heard that the barrels were chrome lined and manufactured by High Standard. I have owned a couple of them. And I currently have one that has been rebarreled to .280 Rem. I once owned a .270 that came with the original 2 1/2x scope. My scope was in bad need of a rebuild. I called Weaver Scope Repair Serv, and was informed that the scopes were manufactured by Weaver... (As I had suspected.) I sent it in and I still have it. Nice, bright, crystal clear scope. It will likely end up on the .280,
HTH,
Grasshopper