Obviously historical pirates didn't use bows and crossbows much, although opponents like Carib Indians certainly did.
I was thinking of just using the crossbow rules for guns. Would need some rules for pistols, since pirate captains tend to have several.
The reason I ask is I've yet to find a set of rules I'm happy with for pirates.
Of the ones I've tried:
Legends of the High Seas is OK, but a bit bland. Ship rules are poor.
On the Seven Seas just doesn't seem to work.
The Peter Pig pirate rules aren't really for pirate skirmishes.
The 'Pirates!' rules seem over complex, and the ship rules are terrible.
En Garde is OK but a bit slow (no rules for ship combat, either)
Sharp Practice really needs larger numbers of figures than I tend to field for Pirate games.