[Deathblob]

Thanks! That's very useful info.

But don't you know that bows are more difficult to master than crossbows? Especially the long bow? So, by your logic, there should be crossbow clubs all over the place now.

If sling bullets are truly spinning and not just tumbling, won't they veer off to the left or right, like a golf slice? Does it depend on the material, like if it had dimples (like a golf ball)?

A properly fletched arrow will spin in flight and not slice off to the right, which is why I think long bows are far superior. I think you will get much better penetration out of a long bow arrow than any sling bullet.