I guess it is pretty well known that I am generally opposed to rechambering drillings( except to "normalize a 9.3x72R or 8.15x46R chamber). But I think Kutter's 30-30 AI idea gives the best chance of success, with the least chance of failure. With regard to a chamber liner, it must be shorter than the case so that obturation keeps the high pressure gases out of the joint. Also the liner should be pulled in tightly and held while the glue sets or solder cools( by a threaded rod through the barrel and washers/nuts on both ends), to reduce the size of the joint.
Mike
