I have cleaned it several times. It’s almost like ripples in the barrel. Wish I could take a picture of it but it to small. I did buy it at Academy Sports and I know it has a lifetime warranty. I might just let them send it to Taurus.I would recommend trying some different ammo. Rimfires can be picky on ammo as far as accuracy is concerned. Also have you checked the bore? Any copper or lead fouling can affect accuracy too.


