Your conclusion based on a flawed hypothesis and not backed up by tracking ammo use
Ah...the old ammo use defense, eh?
You agree that AD&D combat is abstract, yes? OK, isn't ammo tracked when it is used in that game? A sword doesn't have ammo, but a bow sure does. And, in that 1 minute abstract combat round, how many times can a bow be "fired" or used to attack? Twice. It uses two arrows. For darts, it's three attacks.
It's a combination of ammo tracking and the abstract combat round.
Consider further: Let put to AC 10 (naked) characters as targets for archers. The same archer fires at both characters. One target has 50 hit points. The other target has 2.
One arrow attack, doing 1d6 damage hits each target, and damaged rolled is 3 hit points.
Up to this point, everything is the same. Except when we see the damage. Is the target that is reduced from 50 hit points to 47 HP even considered to be struck by the arrow? We don't know. It's abstract.
The other target, though, is killed, reduced to -1 HP, by the single arrow shot. Thus, an indication is received from the abstract system that something factual happened during the combat.
The exact same type of thinking is used in Classic Traveller combat.
In real life, can't we expect an archer to loose more than two arrows per minute, on average? Absolutely.
In real life, can't a person with a revolver fire more than one bullet in 15 seconds? Absolutely.
What you see here is a game rule that tries to bridge reality (how much ammo tracking) with an abstract combat round (the number of attacks per combat round).
Take the AD&D archer example above: Let put to AC 10
(A Traveller character with no armor with the same DMs on the attack throw) characters as targets for archers. The same archer
(gunman) fires at both characters. One target has 50 hit points (
physical stats FFF). The other target has 2 (
physical stats 222).
One arrow attack (
revolver attack), doing 1d6 damage hits each target (
3D damage), and average damage rolled is 3 hit points (
average damage rolled is 10 points).
Up to this point, everything is the same. Except when we see the damage. Is the target that is reduced from 50 hit points to 47 HP (
all damage taken on one stat, physicals are now 5FF) even considered to be struck by the arrow? We don't know. It's abstract.
The other target, though, is killed, reduced to -1 HP, by the single arrow shot (
reduced from 222 to 000). Thus, an indication is received from the abstract system that something factual happened during the combat.
As you can see, relying on ammo counting does not make a system not abstract. Any abstract combat system can say that X amount of ammo is used per round. In fact, that's exactly one of the things I think the abstract T5 system needs--a rule that applies ammo counting to the abstract system.