I have had lead poisoning and I can tell you after that you are much more likely to get it from shooting indoors in an inadequately ventilated range than you are from loading thousands of bullets. I do agree that you don't want to breath in the dust or eat it but that can be controlled by a little cleaning. BTW symptoms were tired all the time and joint pain. I was tested and it took better than six months of shooting outside to limit exposure to get me below the danger level. I did not have to have the chelation therapy because I was 2 points below critical. Good shooting.
I had shot at the same indoor range for years before the problem occurred. The reason for the sudden lead mess was the exhaust fans had been rewired recently and they go the wires crossed somehow so that the fans were exhausting behind the line instead of blowing into the range. The "out" vents were at the far end of the range which, with the fans runnng backwards, proabably had cleaner air than the firing line. The range went almost 4 months in this condition until I brought it to the owner's attention. It waa fixed the next week. I was also spending about 4hours per day 6 days a week training for upcoming bullseye competitions.
I am glad you are not suffering any long term affects. Would you share just how high the lead levels got in your blood?