The problem is that the florid descriptions are not reflected in the actual rules very much.
They are if you factor in the usefulness of having all the electronic and targeting upgrades on the ACR as I have explained.
"Rifle" bullets -- say, the 7.62mm x 51 NATO round (aka .308 Winchester), the .30-06 (7.62mm x 63) round, or the Russian 7.62mm x 54) -- have significantly more energy than "Assault Rifle" bullets -- 5.56mm x 45 NATO; 7.62 x 39 Russian.
I agree. But in game terms the damage between a 7.62 nato and a 5.56mm would not be so significant as to bump the damage a d6 IMO. but you will note the rifle (7.62nato) has greater range than the assault rifle but the same range as the ACR, possible due to the ACRs improved sighting systems.
And Traveller descriptions of those weapons have indicated that they fire bullets in these classes. Thus a "Rifle" should do more damage than an "Assault Rifle".
In my experience both are equally lethal and the only real difference between the two would be range and possibly armor penetration. question is do you think the extra energy of the 7.62mm is enough to justify raising the damage a full d6 over the 5.56mm. To be honest it could be argued that traveller rifle/assault rifle damage is weak. How many people keep fighting after taking a shot to center mass? not many.
"Rifle" rounds are also much better against body armor than "assault rifle" rounds and have superior stopping power at long range. The US Army, for instance, is seriously considering replacing the 5.56mm x 45 round with a 6.8 mm Remington cartridge. Personally, I like the 7.62mm NATO round, but I assume the professionals know best...
I would prefer we drop the 5.56mm and go back to the 7.62 nato also.
As far as armor penetration I would say it depends on the load. a 5.56mm could be designed to be AP and have better AP quality than a 7.62mm. It is safe to say the question of ammo is very complicated and we are only dealing with the tech of one planet. who knows what could be possible in the future.
Oh I am too. I have to admit that I got quite a tingle when I saw that classic black cover with the red Traveller logo (though the font was changed and the Nike-style swash added nothing). I've said this before, but I guess it bears repeating. I do not think that my complaints are serious enough to render the game unplayable. I think that they should have been fixed before printing, but if a little roughness is the price of ditching the playtest T/E system and initiative system, then it's a price well worth paying IMHO.
Fair enough.