If that's the case, he'd be beter off buying an actual bbl designed for the 10/22 and as a target bbl. Not just a large profile one but an actual match grade one. If the Savage bbl diameter would even work, one would still need to have the reciever threaded to allow proper attatchment and then have it all headspaced, etc.
Go to www.Rimfirecentral.com for anything 10/22. If you have a question about the 10/22 it's likely already been answered there.