I know some of the old Ruger tang safety 77's had barrels that were made by Douglas. Are there any marking on these barrels to indicate they were indeed made by Douglas?
Does anyone know who else made barrels for these rifles back then? How can they be identified?

I looked at both of my 77's made in the early 80's and could not find any markings on the barrel to indicate manufacture. A rep did advise they were spending the princely sum of $19 a barrel until they brought production inhouse. They are both rough but shoot about 1.5" at 100 as long as I dont heat the barrel.