non-odour kitty litter or 'play' sand work best. You can purchase "steel" shot from gun stores. I have heard a mixture of play sand and steel shot works nicely.
I have personally yet to load my arro's with sand. I am afraid I will loose some imaging, but I will experiement in the future.
health risk? I think you guys should be more concerned about the crap that goes into our food and live-stock that some lead in a speaker, but thanks for your concern!!!
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