Laser was mis-aligned - Firefield Laser Bore Sight

I really wanted to like this product. At first it seemed to work. However, when I took it out to the range and lined in up at 25 yards, the dot would go on the paper, but NEVER in the middle. I would attach the laser magnet and it held well and was perfectly in the middle of the rifle barrel. What should have been straight at 25 yards from the bore was not. Then, I would simply rotate the laser upon axis on the bore. The laser dot would then go to a completely different location on the paper, which did not make any sense. There was no possible way of using this laser to ZERO the rifle with scope. I then noticed that the laser was actually mounted OFF CENTER inside the metal housing. This laser is a neat idea. But mine was defective. I can't recommend this laser. The manufacturer should know you can't just slap a laser inside a magnetic housing like this and not engineer how it aligns because it will make a difference on the paper. 25 yards isn't that difficult to make work.