It’s been over a decade, but back in the day the Rimfire Central Forum was a great source of information and conversation.
As a side note, if you’re looking for a shooter versus a Gucci 10/22, it’s been suggested that the chamber of the stock 10/22 either is great from the factory or isn’t so great. If it isn’t so great, than some people can modify it to the proper specs. This level of accuracy should satisfy 99.9% of casual target shooters.
That being said, there are many 10/22 customization options out there. Be aware, a bull barrel is HEAVY. If you get a lightweight tensioned barrel, some people have complained (with certain popular companies) about not enough steel in the chamber area and the aluminum sleeves getting battered with the bolt after a few thousand rounds (10/22 plus 1k rounds goes really quickly).
Another thing to consider, is that the way the 10/22 attaches the barrel, if you start building you could have issues with shooting really low (unless proper torque is used and tested at the range), so much so that your scope adjustments might not compensate for the shift. I had considered trying to modify a take-down model, since it doesn’t have the same setup, but moved away from an outdoor range, and don’t enjoy shooting as much at the closer indoor ranges.
I think Brownell’s has a lot of 10/22 parts to start window shopping. Good luck on the build!