After desperatly trying to get a barrel off an older savage using the barrel blocks, rosin, powdered sugar and alll the other advice that didnt work I got desperate. I took a 2x4 cut to 4 inches long and fitted it into the magazine opening to fill the action. I then put the 2x4 that extended below the action in a vise with the bottom of the action resting on the vise. I then had at it with the nut wrench and a ten pound sledge hammer. After about 20 whacks I got the barrel nut loose. No warping of the action that I could detect and this rifle shoots great with its new .35 Whelen barrel. It was an older flat back 30-06 action. I did not have the same problem getting the nut off two more action though I had to dremel off one of them.

El Lobo