I could attempt to record some arrow effects, if you haven't already found some. It's been a long time since I tried this, so I've forgotten where to email or upload them.
It would be very nice if you could make some because it's quite hard to find some free good quality sounds .
If you wouldn't mind I would love to attempt to create another skin/texture for your musket model.
Just PM me so that i can give you the model files and texture i had made (there fore i would need your e-mail). Furthermore I'm a great admirer of your map so you could maybe also give me some mapping advices.