Yeah, it’s pretty amazing what a simple sling can do. The greeks and romans cast lead bullets, and engraved them with pithy quips like “catch”, and “take that”, or lightning bolts.
Wiki has the record for a rock thrown via sling being 1434 feet.
Freegards
My pastor stated last year that the rock hit with the force of a .45. It was considerably more as it turns out.
IIRC, the bullets made by the Greeks and Romans were actually looked like a double ended bullet and were most likely quite lethal.
As pistol shooters say “all we are doing is shooting a faster sling”. I didn’t completely understand that comment until I ran the ballistics on slinging. They’re right.