You might check with Ahlman's in Morristown, MN, as they do a lot of Remington 760 work, including converting 742s with bad guide rails in the receiver into a pump action virtual 760.
www.ahlmans.comAnother big parts dealer is Jack First in Rapid City, SD.
www.jackfirstgun.comI have also seen 760 barrels for sale on GUNBROKER.
Or, as noted previously, you could have the barrel rebored to 8mm-06, 338-06, or 35 Whelen.
Jeff
