Do you think it is possible the projectiles were in fact a cast ceramic material that was fired on a wooden stick instead of drilled?
How loud were they? Maybe they were used as signals on the battle field.
The romans also wrote little quips on their big sling bullets.
http://mentalfloss.com/article/63739/sarcastic-jokes-found-roman-bullets
Freegards
Maybe they were actually lead fishing sinkers......
I never could master the trick, but a childhood friend would send fist-sized stones striking a dead tree across a pond with a regular sharp *crack* that once attracted LE to see what in the heck was going on.
Several years ago I ran the numbers for slings through a ballistic calculator and was rather astonished at the results. Known velocities generated 500 or more ftlbs and some speculative numbers that were most likely within the capabilities of the Balearic slingers were pushing 44 mag stats.
Slingers were feared and rightly so.
The story of David and Goliath has details which led me to believe that the story was written accurately. Goliath may have known he was in dire straits.
Interesting research.
“Burnswark Hill lies a few miles north of the line of Roman forts and ramparts known as Hadrian’s Wall,”
North of the Wall. That’s where the wildlings and white walkers live.
I wonder if the hole could also have been used to place on the end of a stick to use as a lever instead of just in a sling - thus potentially providing a higher velocity.
eh, probably not, occam’s razor and all.
I’ll only buy into the whistling bullet theory if you can tell me what tune they whistled. Do Dah, Do Dah.