Bolt nose clearance is .012" measured on crushed solder, .01" when I measured it on assembly. There's zero bind in the mag well. I did not relieve the rear vertical, but I built another m70 the week before and bedded it exactly the same and it shoots into the .3's......but I will sure open it up at this point. The screws have been measured and dyekemed for verification and they are not the issue.
I've only seen a gun shoot this bad with optics issues. I will try the third scope today.