Why stop at 8 barrels?
Cost - effect analysis. More barrels means you can fire more rounds before they overheat/erode too much, but it also means your gun is heavier, needs more power and takes more time to achieve nominal rate of fire. So, instead of one ten-barreled gun it’s more reasonable to put two five-barreled ones together. AFAIK old-time, crank-powered Gatlings had more barrels, but in modern weapons their number varies between three and seven.
Miniguns and gatling guns don’t “jam”. Conventional small arms can jam because their action depends on the energy from the spent round to eject it and chamber and fire the next round. If the round misfires or some other mechanical blockage interrupts the sequence, the gun stops firing and the jam needs to be cleared.
Miniguns are electrically operated. If a round misfires the motor just keeps spinning and the whole round is just ejected automatically.
Also miniguns are not used “Predator / T2” style IRL. While a human can probably pick up the minigun itself, they would likely be unable to carry 10,000 rounds of 7.62mm amo and the power supply for the motor or handle the recoil. In fact, the high rate of fire makes most gatling style weapons impractical for anything other than aircraft (which tend to not loiter over their target for long) or ships as antiaircraft weapons.
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That little dot is reality as you know it, msmith537.
O is a 1/1000th scale pictorial representation of the might of Ahnold.
Do not doubt our Governor again.
I said “human”.