I cant find a reference anywhere so any help would be great.
Assuming the face of the receiver and the face of the barrel are within spec there should be an acceptable relationship between the two once threaded together.
What is the correct way to check the fit ?
Should the receiver "bore for the bolt" be in perfect alignment with the "bore in the barrel" ?
Or should the "top and sides of the receiver" be in perfect parallel with the "bore in the barrel" ?
Next question is... what is the acceptable tolerance ?