I have started down the rabbit hole of re-barreling my 1958? # 2099X 110L from .30-06 to 6mm Remington.
You have all been very helpful with advice on the process, and as soon as I move some inventory off the gun show table, the project will move forward with a McGowan barrel.
The more time I spend with this action in my hands, the more I really like it. I have owned several 1903A3's, and several Remington 700 series actions, and I think, overall, the 110 is superior.

In the mean time, I was wondering just how many of these pre 1966 110's are still out there?
There are apparently still enough that the barrel makers will work on them as long as you have the original barrel for them to take measurements from.
Does anyone here still have any of the "clip" extractor type actions, or have they been discarded for the most part in favor of the newer actions.

Just thought I would see if I could stir up some discussion and learn any more about the early action. Thanks, Mike