Making fun of myself

So a while back I bought a scope. I put on on my bobcat 22 and was amazing. 1 inch groups at 50 yards all day long using JSB king .... It was amazing. Than one day I switched to a new tin of pellets. It all went down from there. I went to a pop can size groups. So I shot through the tin of pellets ... I moved on to a another tin and it was still a pop can size. I started to test. Then it became obvious to me that the scope went bad (sad day). So I can no longer blaming JSB. So know in the process of getting a new scope! Did you know that there are counterfeit Scopes out there?