Ingestion of lead shot in game, by humans, has nothing to do with the clearly established consequences of lead pipe contamination, lead in paint, and lead vapor inhalation from leaded gasoline, in children. Believing otherwise is sadly uninformed, and I wouldn't share your opinions with the mothers of your grandchildren.
https://www.yalemedicine.org/conditions/lead-poisoning-in-children
https://www.nrdc.org/stories/causes-and-effects-lead-water#problem
https://www.foxnews.com/health/study-links-mental-health-risks-toxin-those-born-60s-70s


British thoughts on steel shot in vintage doubles

https://www.thefield.co.uk/shooting/steel-shot-and-vintage-guns-45758

https://www.shootinguk.co.uk/guns/ammunition/steel-shot-in-old-shotguns-126432/