Never found that accuracy was much of a problem with the 77/22 as much as holding zero from one shooting session to the next.
I would zero the rifle one day and in a couple of weeks later with the same lot of ammo the POI would have shifted .5-3". It happened with both a boat paddle .22 Magnum and a walnut stocked LR.
I think they do this due to the fact that the barrels are held in place by a V-block... I went over to a CZ 452 17" threaded American and it is spot on every time I take it out...
Using loc-tight on the barrel shank can solve that.
