This subject comes up here about every 8 or 9 months, and the same internet "information" gets circulated. I've studied this issue at length, and am involved in the Best Management Practices program at our range and for the Oregon Association of Shooting Ranges.
Simple hygiene practices are all that's necessary to prevent ingesting lead. Elemental lead CAN NOT be absorbed through the skin. Only vaporized or oxidized lead can be absorbed into the body through ingestion or inhalation. There are still a few World War II vets living with lead fragments in their bodies and their blood lead levels have never been elevated. I've got a fragment of lead in my lip that's been there for years, and my levels are within the normal range, and I cast bullets by the thousands in my garage, with proper ventilation, and have three tumblers running most of the time right next to my casting machine. I've been reloading ammunition since 1963, and casting bullets since 1968. if it was nearly as dangerous as some make it out to be, there are a lot of us who wouldn't be here today.
If wearing hazmat clothing makes you feel better, then by all means do it, but it's a waste of time and worry. Wearing rubber gloves isn't necessary, but washing your hands is. Wearing a mask while loading isn't necessary, but if it floats your boat, then do it.
The truth of the matter is, you get much more lead exposure when actually firing the round than you do with handling the ammunition. That's when vaporized lead styphnate is in the air and can be ingested, but it's a minute amount.
I just wish those who keep spreading the rumors and repeating the myths would at least study the subject matter from a scientific viewpoint before hitting the keyboard...
Hope this helps.
Fred