OK I have another question.
If you have an issue with the head space. Either A)to much or B)to little. How do you resolve it?
Normally I think (I've never build a rifle) you do the following.
A) With to much I think you have to remove the barrel, cut one turn off the shoulder on the barrel (if indexed to sight holes or cartridge stamp mark) or less than a turn and rechamber (if needed) to achieve proper space.
B) You have to deepen the chamber. Maybe reinsert the reamer/finish reamer while the barrel remains on the receiver.
Obviously most of the home DIYer is not setup to perform these task.
So if have you received a "Prefit" barrel or a receiver that is out of specification and one or both needed to be replaced?
Then my question is are these returnable parts after they have been installed?
Thanks,