Have you determined for sure the range is the source of your elevated lead levels? Because if not, I would not assume it is the range. There are a lot of other much more likely sources. The range is actually very safe and not typically a source of personal contamination. You will note above I spoke in terms of *risk* of exposure and not in terms of contamination. It was intentional.
Yes, it is the only place I'm exposed to lead.
Indoor ranges are a huge source of personal lead contamination. Lead dust in the air you breath and on the floor.