Why are your players wandering around in carapace or the like? As for soldiers, even a Combat Environment Suit is only 8. And your example assumes completely baseline ammo from an ACR, so no AP values and a minimum success to hit roll.
I just think its interesting that the game repeatedly has multiple shots at a single target being a bonus dmg per die (triple turrets for example), but in this one instance it's multiple separate shots. Obviously, GMs can play it however you want. Personally, I don't think Traveller needs any help in the lethality front, but then I don't have players running around in carapace and combat armor, so *shrug*.
I just think its interesting that the game repeatedly has multiple shots at a single target being a bonus dmg per die (triple turrets for example), but in this one instance it's multiple separate shots. Obviously, GMs can play it however you want. Personally, I don't think Traveller needs any help in the lethality front, but then I don't have players running around in carapace and combat armor, so *shrug*.