It sounds like what the Chinese do with their AK's. I have bought several American rifles where the installed scope was canted. You can get it to shoot dead on at a particular range, but inside or beyond that specific distance it's off to where ever. It may not seem like a big deal at handgun distances, but accuracy is accuracy. BTW, I have gotten some great deals on guns where all I had to do is level the crosshairs. The owners had no idea why their gun would not shoot straight outside the zero range.