I recently disassembled my 110 bolt completely for thorough cleaning and when I reassembled it I set the pin protrusion to .055". I had gotten this measurement from this site. After I reassembled the gun I popped off 5 primed cases and inspected the primers. The indent was a bit more than a live round because their was no reform pressure in the case. I wanted to check that the firing pin would not puncture the primer if I had erred in my dimension. I fired 5 live rounds after this and the indent was as before disassembled.

All in all I realize that taking the firing pin assembly apart for cleaning in my case was unnecessary.

Just some FYI