All FTR means is that it was basically rebuilt to new condition post WWII which is good from the shooting standpoint. Savage supplied many replacement parts that were in the MoD system so that's what they used in your case. Go over and read Peter's article on this forum about proper fitting of forends. I won't argue that you may have a perceived improvement in the accuracy of your rifle but removing the bearing and floating the muzzle isn't the answer. Your forend may have needed other adjustments since wood does change and will warp, etc with time. The fact is that the No.4 was not originally designed to be free floated at the muzzle. Much more extensive testing and retesting was done by the MoD as Peter states above.