I'm not a collector or expert on bedding but have had some shooting experience with three pre-'64s in .30-06 and one in .300 H&H. All are original guns and remain unbedded. All shoot well, but may not perfectly hold zero from time to time, They are generally plenty close for hunting, however, bedding might correct this altogether.
As for the forearm screw, I've never had the need to tamper with one, but would if I had an accuracy problem. On two .30-06s (the third is a featherweight), I don't know how tight or loose the screws are, but on the .300 Magnum, it's tight.
