In post number 6 Frank G mentions buying 2 barrels one for now one for the future. When i built my 7RUM i ha a false start with a broughton barrel and badly built rifle. When i figured out what was wrong I had Frank G send two barrels to the new smith and he chambered them both at the same time. I highly recommend doing what he says. Cheaper smithing to do them both at once less shipping and no down time waiting on barrel number 2.