How to barrel change Ruger American

Is anyone switching barrels on their Ruger American? I have one American (Ranch) and I'm looking to buy a second (Hunter in .308 if I can ever find one to buy).

What are you using to unscrew the lock nut and what are you using to hold the action. I would greatly appreciate some advice.

I've changed barrels back and forth on my benchrest rifles hundreds of times. There we clamp the barrel and put a wrench through the action. The Ruger's flat sided action looks deceivingly like something that could be secured in a vice and a band wrench used to crack the nut loose.

Then I start thinking that it could take three hands to hold the action with go gauge, the barrel and the nut spanned wrench. And advice would be appreciated. Thanks, Bill.

Little Crow Gun Works. Anarchy Outdoors