I am a long time user and great fan pre-64 Mod.70., but I will admit that some of the latest Mod.70 look and feel just as good as some of the pre-64's That said, all Mod.70's have a serious flaw, they allow gas to escape through the bolt assembly to the shooters face and eyes should there be a catastrophic case failure. I know this because I have witnessed it.
When the Classic was introduced, one of the improvements over the pre-64 was a gas block mounted opposite the extractor to reduce gas from flowing back through the left raceway. In addition, later Classics also had a gas flange on the left side of the bolt shroud to deflect any gases which came through the left raceway away from the shooters face. Post New Haven Model 70's incorporate both these features. But, are you saying gas comes through the interior of the bolt, past the firing pin?
