Gunnut69,
On the Springfield it was a high number double heat treated action made in 1918, I installed a 1/1944 Remington made barrel on it and was lucky that the extractor slot lined up correctly. The barrel was short chambered by about .005 but would with a lot of effort close on a new unfired case, I had both go and no go guages in my shop to confirm the short chamber, but no 30-06 finish reamer. When I priced the cost of a new reamer $150.00 I decided to contact a couple of local gunsmiths who I already knew had reamers.
$40.00 for ten minutes work by the gunsmith work calculates out to $240.00 per hour, but that $40.00 was cheaper than either renting or buying a finished reamer on my part and I only had a ten minute drive to get the job done and it was done same day.
Another point, one of the easiest actions to fit a barrel to is the 98 mauser, no extractor slot or other complicated cuts needed due to the simple design of the barrel and receiver. You can order a long chambered barrel and finish up the fitting using just a mill file if you know what you are doing and can check the headspace as you go.
I take pride in doing it myself, but sometimes common sense says that you should pay someone else rather than spend more money than it is worth to rent or buy tooling for a one time job.