I have a take off that for this purpose was a 280 AI with an eroded throat . It has plenty of shank space to have it cut off for a SR And with the rechamber remove all but all of the erosion and leave a nice clean 7mm 08 or even a 284 or lastly ,due to finding dies a 7x57 AI. Begging the question what if someone chambers a factory in a 1908 Oviedo.
So the question is , is it worth the time and money to cut, thread ,and chamber a throat eroded bbl or should I consider having it bored up to 30 cal and saved for its original action . 30-06' AI would move the shoulder forward about .08. There is also a sister action that would make nice 300WM.