Dan Cash
Member
I bought a box of Win. Expert HV .22 LR ammo last week. I just finished firing 48 rounds through a 5 screw K22. The last 6 made a cylinder bore pattern instead of a group and the chambers were so fouled that the rounds were difficult to load and extract. The cylinder also became difficult to rotate and required assistance to index. This revolver is nearly mint and does not do this with any other ammo that I have used with it. A bore brush with Ed's Red took the leading out quickly but I have never seen this kind of leading with a .22.