Well, I've never seen it happen with ranged weapons but I know
what the deal is with the melee weapons.
When in a melee fight, your char does cosmetic swings (I think that's what it's called in the manual). They're used to fill up the rest of
the round so your char doesn't just stand still in the middle of a
massive brawl. This way it's suppossed to look like your char is
parying and dodging while in the fight.
The more attacks per round you get, the more the attacks will
become "real" attacks.
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