A large proportion of the accuracy issues with 22 lr's involves finding one or two brands of ammo that work well. One my do no better than hitting baseballs at 50 yds with one brand and be driving tacks with another. Spring for a box of every brand one can find and go shoot some paper. Give the rejects to someone who doesn't care.
I would not dink with a barrel until one has looked at ammo and/or a potential headspace issue. 1Minute
