Thank you very much Mike for the detailed info. Just so I am clear on what you are describing, Let me illustrate. Here is what the insert looks like with the headspace screw bottomed out all the way.
inserted
The entire unit is flat and flush but it protrudes slightly above the chamber face.
I think the screw has been slightly filed or peened already as you can see in this picture. This would be the contact point in the chamber rim.
So, you are saying I can flatten the red area of the rim's edge to accept the screw head to allow it to sink a few thou deeper into the rim and thus fit flush?
And these would be the tools to use?
Thanks, Steve
