[Cerek the Barbaric]

Jaheira just has a regular +2 sling, but she was doing 12-14 points of damage per hit on the Stone Golems.

Since she is also using +2 bullets, that is a total bonus of +4. Sling bullets do 1-4pts of damage....so the MOST she should have been able to do was 8 pts of damage.

Where did the other damage come from? Gauntlets of Ogre Power, which give +3 to hit and +6 to damage.

With the Gauntlets, Jaheira is actually doing 1-4 + 10 points of damage with each sling bullet. So slings do allow Strength bonus.

Now let's look at just a normal +2 bow (for those that my not have the Tuigen bow).

With two arrows per round (also +2). Now you are talking about 1-6 + 4 with each attack or a total of 2-12 + 8 each round.

So arrows have a potention of doing 10-20pts of damage each round.
Tuigen bow would give 12-27 pts of damage per round ((1-6 + 2 for arrows + 1 for bow)x 3).
Sling & bullets have a potential of doing 11-14 per round (if you have Gauntlets of Ogre Power).

No matter how you look at it, Arrows provide better potential for damage - if you're character can use them.