Version: gemrb-0.72-git (4 Feb 2013)
BG2 setup: official patches, fixpack from gibberlings, unfinished business
After equipping the gesen bow (+4) it seems to do incredibly high damage: i.e. usually 193 points of damage and sometimes even 383 points.
My character (Mikella) is equipped with the bow, and I noted while testing that the bow did 193 points of damage.
It's probably something to do with the multipliers, but I'm not that familiar with the calculation mechanism.
Also, a force attack on civilians causes the bow to do 196 damage, so the amount of damage caused is probably not quite right.
OS: Xubuntu 12.04