I'd suggest that, instead of using projectiles, use raycasts with radius checks at the end of them so you actually have SOME sort of accuracy with the swords.
Right now in duels I almost always miss all my swings unless my opponent is completely standing still. They're not that fun to use in their current state :/
EDIT: I'm feeling like rewriting the way these weapons work completely. As in, the actual hit detection and stuff. I suppose I could give that to you once I'm done?