Robertacabin: Wow what a cool find!
I think that vintage "Target Rifles had an extra "slick" trigger most often marked (stamped) with a "T".
I am not aware of any special bedding additives or devices but the few Model 70 "Targets" I have shot did, indeed, shoot well.
I hope someone can answer your questions better than I - and again great find.
Hold into the wind
VarmintGuy
