I snagged a 458 tube from AR and a forearm from 24 hr Campfire. I'm welding a homemade hydraulic jack powered barrel vice now. Then I will go to a buddys place and short chamber the barrel.
The 450NE will clean out the 458WM chamber. I doin't know if I'll try to re-do the extractor or get a fresh one right now. We'll see.
Then it should be simple to reassemble it. Maybe!