At least what I discovered - not finding many folks able or knowledgeable to do those "square threads" on the barrel tenon that is on P13, P14, M1917, Rem 30. Not a "slam dunk" easy to do to swap barrels - have to figure a way to get those threads cut. Is a "project" underway here, now.
I've never seen one without a barrel on it, but the first thing I'd likely do is measure it all up to see if using an old barrel to make make a sleeve that threads into the action and can be threaded for something more conventional would work, think along the lines of the old barrel stub used on the sportco actions minus the raceway for the bolt lugs, either that or recut threads in the action. Which brings us to, if you're paying someone to do all this work, it would be cheaper to start with a savage action and a prefit barrel unless there is some serious importance to the wore out rifle.