There was a period in the early offerings of the Mod 77 when Ruger did not make its own barrels. They outsourced them, I "think" Douglas was one? But there was also a batch that cost them, what I read long ago, about $17 a pop. Ha As I understand it too, when Ruger started making their own barrels they also changed the Red Pad for one in black. I too agree in shooting it (well, maybe doing some trigger work or replacement) before messing with the bedding.
My first .280 was a Mod 77 I bought in late 1977 ! Its trigger was hard but broke OK. Back then, no gunsmith I knew would attempt to lighten it. I didn't do anything to it, just kept the screws tight. It was very accurate. Oh BTW, I was never able to reach 95 "pds before my screwdriver started to slip and hair-lip the slot! Don't worry about, just keep every tight. Clean it good, wet that bore with EezOx and allow to dry overnight. Then shoot three, and swag/wipe the bore with more EezOx. Do this for 15rds. It will help "season" the bore like a good iron-skillet, which is what my mother baked "Cornbread" in lol.