Coloring a bullet helps eliminate reflections from the ground, should you have a problem with that. Light colored gravel or concrete can cause the problem of picking up reflections off copper. Putting down black plastic on the ground should prevent it. I've never had a problem with grass or dirt causing this.
The range I use is mostly red clay dirt with some grass.
The unit in boxed up and will be sent back for technical support. I appreciate all the ideas fellows but this little adventure has been a fun sucker and that's no way to spend a day at the range.