You should really do some reading and question asking over on Rimfirecentral.
www.rimfirecentral.com
Also, the BC caron fiber bbls are axactly looked upon very highly by most over on RFC. There's lots of bbl makers now. Again, check thoughts and opinions on each at the RFC forums. If you're looking for a stock.bbl combo, look at Boyd's. They've got a great package going. For the trigger...TT Shooter.
But, head to the RFC forums, look around do some searches and ask questions. Chances are if it's 10/22 it's been discussed and tryed by someone there.