>>64168262
>>64168280
One text description said the 7.62 the UNSC was using was a bit faster, like 3000fps or some such, and the UNSC has been known to use sci fi materials for armor piercing projectiles so it could be anything I guess.
The main tactical advantage of the AR was it's low recoil. All UNSC guns use sci fi recoil bullshit, which is the "explanation" for what probably started as animation inaccuracies such as why people are able to one hand magdump that 500SW grenade launcher they call a sidearm with almost no climb. 120 pound women comfortably fire the shotgun which is supposed to be, not only big, but like a giant space elephant gun in powder charge. Miranda even believed, after firing it, she could do it one handed.
The AR is "supposed" to be dead accurate while firing full automatic even in the hands of a regular human. That's how they justify the stated 300m standard range, it's 300m full auto with every round on one target.
There's a scene in one of the live action films they did where a teenage girl is firing .308 full auto with like zero recoil and she picks up a covenant carbine when she's out of ammo and the recoil knocks her flat on her back, showing at least some of the designers were pushing this "low recoil UNSC magic" idea.
The AR was still supposed to be woefully outdated and almost useless in the Covenant war, it was the equivalent of the 38 special revolvers Asian governments give to their police, as in a weapon that could just barely outshoot the Insurrectionists, was cheap, and wasn't that useful if stolen. One book says that even UNSC soft armor is more or less impervious to it.
The BR was supposed to be some hole-in-hole at 900 paces supergun that would punch through an inch of steel, originally restricted to loyal fed niggers only then handed out in desperation in the last stages of the war.