Since the rules are a bit fuzzy on this question, it becomes an abstraction subject to Referee interpretation. Roll a 6 on the ammo dice for a weapon with ROF 1, MAG 1? Either the bullet enters one body part, exits, and enters another (from someone who's read a ton of military history and first person accounts of combat, this is entirely within the realm of possibilities) or a bullet passes through one person and winds up in another (less common, but it happens).
But I get it. It would be nice to hear what the design intent was (if it was a conscious decision) or how one of the designers would rationalize the rule.
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