RE: most accurate factory .22
I have a Ruger 77/22 stainless it is their bolt action version and it will touch holes at 30 yards and shoot a .5" group at 50 yards with the factory trigger and a cheaper 4 power scope. the trigger is not adjustable but it shoots good. They cost about $400. If you get the magnum the .22 mag and .17HMR barrels are interchangeable. I love my 77/22 and highly recommend it.