How are you stopping the barrel from turning? I’ve tried it this way a few times but noticed the barrel would rotate while torquing nut.I had some problems recently on headspace until I changed how I torqued barrels. I removed the handle from the Wheeler action wrench, removed the barrel wooden blocks from the Wheeler barrel vise. The Wheeler action wrench will fit in barrel vise and you can tighten it down. Place go gauge in like you normally do with bolt, screw barrel in until snug to gauge, tighten barrel nut and then torque. Since action is locked in vise you can really snug barrel properly. Love the action is locked down so it becomes lot easier to set headspace and torque to spec. Just different way to use the barrel vise to hold action.