Quote:(waterjet cut would be really nice - anyone have one in the garage?)
If I knew what it was I could probably acquire one :-)
okay slings fell out of use in battle for several reasons. 1) you can't aim a sling.
Even a complete idiot can sight down a crossbow.
2) you can teach someone to hit a barn door at 50 yards with a crossbow in about 5 mins (assuming you throw in a bit of safety about not putting your finger in the way of either the winding gears or the cord once you pull the trigger)
It takes several days to get someone even halfway competent enough to hit a barn at fifty yards with a sling - and there's no guarentee it'll go through the door at that.
It's as simple as that. crossbows are pretty much skill free for basic use.
Even bows require technique and training.
If you invest that training then a bowman will outshoot a crossbow.
But both can be aimed and are more effective for battle than a sling, given how many trained crossbowmen or bowmen you can get in the same time you can turn out trained slingers.
For practical purposes there's just no comparison I'm afraid.