Could some one please clarify some terms used by different barrel manufacturers. What is the differences of a pre-fit barrel which is a short thread shank and a barrel which the chamber is cut .005" to .010" short? What is the technique for each to correctly time and headspace the barrel?

I believe the short cut chamber can be headspaced with a pull through reamer until the bolt closes. I am not sure of the technique for a short thread shank barrel.

Thanks
Bob