I belong to a club that has an indoor range that they have decided will be lead free. I have never shot on it and any time I have been there (non snow/winter) shooting outdoors it has never been in use. The backstop is the venetian blind type. Bullets can be lead but must be encapsulated, this will prevent lead vapour from firing but they are still allowed to smash into the back stop and they are not concerned with this. 22 is not allowed for the reasons already stated above. Lead free primers are impossible to find in Canada although I did give up looking about 8 months ago. Primers actually contain an infinitesimal amount of lead, enough to be ignored in most situations, as per
www.ssusa.org/media/1533525/1014_ssusa_archive.pdf very interesting info. Lead free is fine but everything should be kept in perspective, deal with the facts and not the hearsay. Sounds to me that decent air handling at the line with encapsulated bullets and regular primers with a wet trap is the most obvious way to go. Loaders can do powder coat or buy plated.
Forgot to mention, every few years I get tested for lead when doing normal blood work. In at least Ontario it's free with a req from your doctor. Never had a problem.