The bad news with one of those rifles is you really can't blame the gun, unless there's a visible bend in the barrel.
I went to a class and used my Anschutz. I found out those rifles can not be fired more than a hundred times without cleaning. I had about two hundred rounds through it and it became worse and worse. Finally, I couldn’t hit a piece of paper from fifty yards with it.
It took hours to clean the leading from the bore.