SUCCESS!!!!!
I had to talk to three gunsmiths and departments at Remington before someone determined they CAN rebarrel the 760. It goes to the Illion. New York facility. The 800 customer service is answered in North Carolina. It will be sent after deer season. I had quotes from "we cant do it because no barrels are available" to $800. I imagine the interrupted thread in the barrel that accepts the bolt is a little out of the ordinary.

Thank you all for the assistance. Couldn't have done it without the help.
Bongo