All the parts between the 10/22 and Charger are the same...the difference only being in the receiver (finish, and pistol labeled). Everything will interchange.
Over on RFC there are several people posting groups and results...not all of 'em using quality ammo, but apparently in stock form it's capable of sub 1" groups with decent ammo. High velcity ammo will go supersonic in a 4" barrel, so you aren't losing all that much energy out of the Charger...with a decent crown and setting the factory barrel back to rechamber you should be getting pretty sweet groups.
There are also several of 'em already there with custom finishes, custom barrels (turned down GM's and such), and custom stocks. The majority posted already have new buffers, hammer/trigger parts, etc.
Great little rig so it seems.
I'd like to get one, but I'm not in a big enough hurry to deal with special ordering or traveling just yet. My local shop just looks at me and says "Ruger what? Never heard of it..."
If you can get it for $320 or less you did pretty well considering they're pretty hot right now (recent release). I see many claim to be picking 'em up for about $280, but it seems the majority are paying $300... I would be willing to pay $340 OTD for one and never look back. Higher than that and I'll wait.