Mine shoots very nice groups at 100M with subsonic target .22.
Clean the grease from the bore, bolt, and action before you shoot it - like all Norinco .22 rimfires it comes packed in cosmoline.
If you mount a scope it has to be with high rings or the scope has to be mounted on the rear sight base. The rear sigth base will take a standard M98 rear sight. I converted a M98 rear sight and drilled and tapped it for a picatinny rail, then mounted a long eye relief pistol scope. Less than 1" groups at 50 metres with select subsonic ammo. It does like T22 and federal champion. It does NOT like Walmart discount federal bulk pack.
.22 rimfire rifles may be picky about ammo. Try many brands to get the best groups.