The 10-22 is very accurate out of the box but the trigger sucks. Before you make a lot of expensive mods, fix the trigger. There are people on the site that can do the work reasonably or you can get a drop in trigger group from $110 to $250. Go for the cheaper options unless you intend to make it a full blown target rifle. The only other mod to start with is a Delrin (nylon) bolt stop pin to replace the steel one and they are cheap. The 10-22 with an ammo it likes is under 1/2" at 25 yards and I have seen 10 shot groups you could cover with a quarter and not see any holes at 50 yards.
Patron Member NRA
"I would not be an old man if I had not been an armed young man." JTJ
I was taught to respect my elders but they are getting harder to find.